Home / 9,321.29-12,860.08-5,287.53

Finding the Fourth Proportional to 9,321.29, 12,860.08 and 5,287.53

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Solution

The fourth proportional to 9,321.29, 12,860.08 and 5,287.53 is: 7,294.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,321.29 : 12,860.08 = 5,287.53 : x
  2. Step 2: Convert to fraction form
    9,321.29/12,860.08 = 5,287.53/x
  3. Step 3: Cross multiply
    9,321.29x = 12,860.08 × 5,287.53
  4. Step 4: Simplify right side
    9,321.29x = 67,998,058.80
  5. Step 5: Solve for x
    x = 67,998,058.80/9,321.29
  6. Step 6: Final answer
    x = 7,294.92

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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.