Home / 2,080.24-2,870.80-1,148.76

Finding the Fourth Proportional to 2,080.24, 2,870.80 and 1,148.76

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Solution

The fourth proportional to 2,080.24, 2,870.80 and 1,148.76 is: 1,585.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,080.24 : 2,870.80 = 1,148.76 : x
  2. Step 2: Convert to fraction form
    2,080.24/2,870.80 = 1,148.76/x
  3. Step 3: Cross multiply
    2,080.24x = 2,870.80 × 1,148.76
  4. Step 4: Simplify right side
    2,080.24x = 3,297,860.21
  5. Step 5: Solve for x
    x = 3,297,860.21/2,080.24
  6. Step 6: Final answer
    x = 1,585.33

Related Problems

Find fourth proportional to 1,040.12, 1,435.40 and 574.38
Half scale
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Double scale
Find fourth proportional to 2,081.24, 2,872.18 and 1,149.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.