Home / 8,459.20-11,677.78-5,631.28

Finding the Fourth Proportional to 8,459.20, 11,677.78 and 5,631.28

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Solution

The fourth proportional to 8,459.20, 11,677.78 and 5,631.28 is: 7,773.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,459.20 : 11,677.78 = 5,631.28 : x
  2. Step 2: Convert to fraction form
    8,459.20/11,677.78 = 5,631.28/x
  3. Step 3: Cross multiply
    8,459.20x = 11,677.78 × 5,631.28
  4. Step 4: Simplify right side
    8,459.20x = 65,760,848.96
  5. Step 5: Solve for x
    x = 65,760,848.96/8,459.20
  6. Step 6: Final answer
    x = 7,773.89

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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.