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Finding the Fourth Proportional to 6,985.16, 10,481.34 and 6,931.88

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Solution

The fourth proportional to 6,985.16, 10,481.34 and 6,931.88 is: 10,401.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,985.16 : 10,481.34 = 6,931.88 : x
  2. Step 2: Convert to fraction form
    6,985.16/10,481.34 = 6,931.88/x
  3. Step 3: Cross multiply
    6,985.16x = 10,481.34 × 6,931.88
  4. Step 4: Simplify right side
    6,985.16x = 72,655,391.12
  5. Step 5: Solve for x
    x = 72,655,391.12/6,985.16
  6. Step 6: Final answer
    x = 10,401.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.