Home / 2,547.38-3,515.19-1,428.29

Finding the Fourth Proportional to 2,547.38, 3,515.19 and 1,428.29

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Solution

The fourth proportional to 2,547.38, 3,515.19 and 1,428.29 is: 1,970.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,547.38 : 3,515.19 = 1,428.29 : x
  2. Step 2: Convert to fraction form
    2,547.38/3,515.19 = 1,428.29/x
  3. Step 3: Cross multiply
    2,547.38x = 3,515.19 × 1,428.29
  4. Step 4: Simplify right side
    2,547.38x = 5,020,710.73
  5. Step 5: Solve for x
    x = 5,020,710.73/2,547.38
  6. Step 6: Final answer
    x = 1,970.93

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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.