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Finding the Fourth Proportional to 7,007.44, 9,666.12 and 4,920.88

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Solution

The fourth proportional to 7,007.44, 9,666.12 and 4,920.88 is: 6,787.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,007.44 : 9,666.12 = 4,920.88 : x
  2. Step 2: Convert to fraction form
    7,007.44/9,666.12 = 4,920.88/x
  3. Step 3: Cross multiply
    7,007.44x = 9,666.12 × 4,920.88
  4. Step 4: Simplify right side
    7,007.44x = 47,565,816.59
  5. Step 5: Solve for x
    x = 47,565,816.59/7,007.44
  6. Step 6: Final answer
    x = 6,787.90

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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.