Home / 7,781.64-11,655.30-6,432.11

Finding the Fourth Proportional to 7,781.64, 11,655.30 and 6,432.11

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Solution

The fourth proportional to 7,781.64, 11,655.30 and 6,432.11 is: 9,633.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,781.64 : 11,655.30 = 6,432.11 : x
  2. Step 2: Convert to fraction form
    7,781.64/11,655.30 = 6,432.11/x
  3. Step 3: Cross multiply
    7,781.64x = 11,655.30 × 6,432.11
  4. Step 4: Simplify right side
    7,781.64x = 74,968,171.68
  5. Step 5: Solve for x
    x = 74,968,171.68/7,781.64
  6. Step 6: Final answer
    x = 9,633.98

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1.5x scale

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.