Home / 8,391.18-11,587.56-5,412.12

Finding the Fourth Proportional to 8,391.18, 11,587.56 and 5,412.12

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Solution

The fourth proportional to 8,391.18, 11,587.56 and 5,412.12 is: 7,473.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391.18 : 11,587.56 = 5,412.12 : x
  2. Step 2: Convert to fraction form
    8,391.18/11,587.56 = 5,412.12/x
  3. Step 3: Cross multiply
    8,391.18x = 11,587.56 × 5,412.12
  4. Step 4: Simplify right side
    8,391.18x = 62,713,265.23
  5. Step 5: Solve for x
    x = 62,713,265.23/8,391.18
  6. Step 6: Final answer
    x = 7,473.71

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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.