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Finding the Fourth Proportional to 6,614.60, 9,913.80 and 2,912.90

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Solution

The fourth proportional to 6,614.60, 9,913.80 and 2,912.90 is: 4,365.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,614.60 : 9,913.80 = 2,912.90 : x
  2. Step 2: Convert to fraction form
    6,614.60/9,913.80 = 2,912.90/x
  3. Step 3: Cross multiply
    6,614.60x = 9,913.80 × 2,912.90
  4. Step 4: Simplify right side
    6,614.60x = 28,877,908.02
  5. Step 5: Solve for x
    x = 28,877,908.02/6,614.60
  6. Step 6: Final answer
    x = 4,365.78

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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.