Home / 5,386.71-7,431.17-3,148.68

Finding the Fourth Proportional to 5,386.71, 7,431.17 and 3,148.68

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Solution

The fourth proportional to 5,386.71, 7,431.17 and 3,148.68 is: 4,343.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,386.71 : 7,431.17 = 3,148.68 : x
  2. Step 2: Convert to fraction form
    5,386.71/7,431.17 = 3,148.68/x
  3. Step 3: Cross multiply
    5,386.71x = 7,431.17 × 3,148.68
  4. Step 4: Simplify right side
    5,386.71x = 23,398,360.61
  5. Step 5: Solve for x
    x = 23,398,360.61/5,386.71
  6. Step 6: Final answer
    x = 4,343.72

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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.