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Finding the Fourth Proportional to 7,310.30, 10,981.65 and 7,015.10

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Solution

The fourth proportional to 7,310.30, 10,981.65 and 7,015.10 is: 10,538.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,310.30 : 10,981.65 = 7,015.10 : x
  2. Step 2: Convert to fraction form
    7,310.30/10,981.65 = 7,015.10/x
  3. Step 3: Cross multiply
    7,310.30x = 10,981.65 × 7,015.10
  4. Step 4: Simplify right side
    7,310.30x = 77,037,372.92
  5. Step 5: Solve for x
    x = 77,037,372.92/7,310.30
  6. Step 6: Final answer
    x = 10,538.20

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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.