Home / 9,285.80-12,815.29-5,306.15

Finding the Fourth Proportional to 9,285.80, 12,815.29 and 5,306.15

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Solution

The fourth proportional to 9,285.80, 12,815.29 and 5,306.15 is: 7,322.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,285.80 : 12,815.29 = 5,306.15 : x
  2. Step 2: Convert to fraction form
    9,285.80/12,815.29 = 5,306.15/x
  3. Step 3: Cross multiply
    9,285.80x = 12,815.29 × 5,306.15
  4. Step 4: Simplify right side
    9,285.80x = 67,999,773.69
  5. Step 5: Solve for x
    x = 67,999,773.69/9,285.80
  6. Step 6: Final answer
    x = 7,322.98

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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.