Home / 7,972.80-11,002.38-4,387.64

Finding the Fourth Proportional to 7,972.80, 11,002.38 and 4,387.64

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Solution

The fourth proportional to 7,972.80, 11,002.38 and 4,387.64 is: 6,054.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,972.80 : 11,002.38 = 4,387.64 : x
  2. Step 2: Convert to fraction form
    7,972.80/11,002.38 = 4,387.64/x
  3. Step 3: Cross multiply
    7,972.80x = 11,002.38 × 4,387.64
  4. Step 4: Simplify right side
    7,972.80x = 48,274,435.80
  5. Step 5: Solve for x
    x = 48,274,435.80/7,972.80
  6. Step 6: Final answer
    x = 6,054.89

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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.