Home / 8,385.16-12,561.30-4,867.79

Finding the Fourth Proportional to 8,385.16, 12,561.30 and 4,867.79

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Solution

The fourth proportional to 8,385.16, 12,561.30 and 4,867.79 is: 7,292.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,385.16 : 12,561.30 = 4,867.79 : x
  2. Step 2: Convert to fraction form
    8,385.16/12,561.30 = 4,867.79/x
  3. Step 3: Cross multiply
    8,385.16x = 12,561.30 × 4,867.79
  4. Step 4: Simplify right side
    8,385.16x = 61,145,770.53
  5. Step 5: Solve for x
    x = 61,145,770.53/8,385.16
  6. Step 6: Final answer
    x = 7,292.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.