Home / 2,818.80-4,231.24-1,587.40

Finding the Fourth Proportional to 2,818.80, 4,231.24 and 1,587.40

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Solution

The fourth proportional to 2,818.80, 4,231.24 and 1,587.40 is: 2,382.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.80 : 4,231.24 = 1,587.40 : x
  2. Step 2: Convert to fraction form
    2,818.80/4,231.24 = 1,587.40/x
  3. Step 3: Cross multiply
    2,818.80x = 4,231.24 × 1,587.40
  4. Step 4: Simplify right side
    2,818.80x = 6,716,655.83
  5. Step 5: Solve for x
    x = 6,716,655.83/2,818.80
  6. Step 6: Final answer
    x = 2,382.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.