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Finding the Fourth Proportional to 7,002.70, 9,666.94 and 4,987.42

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Solution

The fourth proportional to 7,002.70, 9,666.94 and 4,987.42 is: 6,884.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,002.70 : 9,666.94 = 4,987.42 : x
  2. Step 2: Convert to fraction form
    7,002.70/9,666.94 = 4,987.42/x
  3. Step 3: Cross multiply
    7,002.70x = 9,666.94 × 4,987.42
  4. Step 4: Simplify right side
    7,002.70x = 48,213,089.89
  5. Step 5: Solve for x
    x = 48,213,089.89/7,002.70
  6. Step 6: Final answer
    x = 6,884.93

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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.