Home / 2,547.76-3,515.90-1,428.71

Finding the Fourth Proportional to 2,547.76, 3,515.90 and 1,428.71

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Solution

The fourth proportional to 2,547.76, 3,515.90 and 1,428.71 is: 1,971.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,547.76 : 3,515.90 = 1,428.71 : x
  2. Step 2: Convert to fraction form
    2,547.76/3,515.90 = 1,428.71/x
  3. Step 3: Cross multiply
    2,547.76x = 3,515.90 × 1,428.71
  4. Step 4: Simplify right side
    2,547.76x = 5,023,201.49
  5. Step 5: Solve for x
    x = 5,023,201.49/2,547.76
  6. Step 6: Final answer
    x = 1,971.61

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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.