Home / 8,386.38-11,572.92-5,405.22

Finding the Fourth Proportional to 8,386.38, 11,572.92 and 5,405.22

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Solution

The fourth proportional to 8,386.38, 11,572.92 and 5,405.22 is: 7,459.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,386.38 : 11,572.92 = 5,405.22 : x
  2. Step 2: Convert to fraction form
    8,386.38/11,572.92 = 5,405.22/x
  3. Step 3: Cross multiply
    8,386.38x = 11,572.92 × 5,405.22
  4. Step 4: Simplify right side
    8,386.38x = 62,554,178.64
  5. Step 5: Solve for x
    x = 62,554,178.64/8,386.38
  6. Step 6: Final answer
    x = 7,459.02

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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.