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Finding the Fourth Proportional to 9,861.60, 14,770.80 and 5,959.20

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Solution

The fourth proportional to 9,861.60, 14,770.80 and 5,959.20 is: 8,925.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,861.60 : 14,770.80 = 5,959.20 : x
  2. Step 2: Convert to fraction form
    9,861.60/14,770.80 = 5,959.20/x
  3. Step 3: Cross multiply
    9,861.60x = 14,770.80 × 5,959.20
  4. Step 4: Simplify right side
    9,861.60x = 88,022,151.36
  5. Step 5: Solve for x
    x = 88,022,151.36/9,861.60
  6. Step 6: Final answer
    x = 8,925.75

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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.