Home / 7,972.20-11,001.12-4,435.32

Finding the Fourth Proportional to 7,972.20, 11,001.12 and 4,435.32

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Solution

The fourth proportional to 7,972.20, 11,001.12 and 4,435.32 is: 6,120.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,972.20 : 11,001.12 = 4,435.32 : x
  2. Step 2: Convert to fraction form
    7,972.20/11,001.12 = 4,435.32/x
  3. Step 3: Cross multiply
    7,972.20x = 11,001.12 × 4,435.32
  4. Step 4: Simplify right side
    7,972.20x = 48,793,487.56
  5. Step 5: Solve for x
    x = 48,793,487.56/7,972.20
  6. Step 6: Final answer
    x = 6,120.45

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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.