Home / 7,715.60-11,565.12-3,335.12

Finding the Fourth Proportional to 7,715.60, 11,565.12 and 3,335.12

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Solution

The fourth proportional to 7,715.60, 11,565.12 and 3,335.12 is: 4,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,715.60 : 11,565.12 = 3,335.12 : x
  2. Step 2: Convert to fraction form
    7,715.60/11,565.12 = 3,335.12/x
  3. Step 3: Cross multiply
    7,715.60x = 11,565.12 × 3,335.12
  4. Step 4: Simplify right side
    7,715.60x = 38,571,063.01
  5. Step 5: Solve for x
    x = 38,571,063.01/7,715.60
  6. Step 6: Final answer
    x = 4,999.10

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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.