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Finding the Fourth Proportional to 7,969.60, 10,998.12 and 4,432.72

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Solution

The fourth proportional to 7,969.60, 10,998.12 and 4,432.72 is: 6,117.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,969.60 : 10,998.12 = 4,432.72 : x
  2. Step 2: Convert to fraction form
    7,969.60/10,998.12 = 4,432.72/x
  3. Step 3: Cross multiply
    7,969.60x = 10,998.12 × 4,432.72
  4. Step 4: Simplify right side
    7,969.60x = 48,751,586.49
  5. Step 5: Solve for x
    x = 48,751,586.49/7,969.60
  6. Step 6: Final answer
    x = 6,117.19

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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.