Home / 2,675.13-3,690.71-1,555.66

Finding the Fourth Proportional to 2,675.13, 3,690.71 and 1,555.66

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Solution

The fourth proportional to 2,675.13, 3,690.71 and 1,555.66 is: 2,146.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,675.13 : 3,690.71 = 1,555.66 : x
  2. Step 2: Convert to fraction form
    2,675.13/3,690.71 = 1,555.66/x
  3. Step 3: Cross multiply
    2,675.13x = 3,690.71 × 1,555.66
  4. Step 4: Simplify right side
    2,675.13x = 5,741,480.58
  5. Step 5: Solve for x
    x = 5,741,480.58/2,675.13
  6. Step 6: Final answer
    x = 2,146.25

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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.