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Finding the Fourth Proportional to 7,013.85, 9,720.91 and 6,882.63

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Solution

The fourth proportional to 7,013.85, 9,720.91 and 6,882.63 is: 9,539.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,013.85 : 9,720.91 = 6,882.63 : x
  2. Step 2: Convert to fraction form
    7,013.85/9,720.91 = 6,882.63/x
  3. Step 3: Cross multiply
    7,013.85x = 9,720.91 × 6,882.63
  4. Step 4: Simplify right side
    7,013.85x = 66,905,402.49
  5. Step 5: Solve for x
    x = 66,905,402.49/7,013.85
  6. Step 6: Final answer
    x = 9,539.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.