Home / 7,151.10-10,730.85-2,990.76

Finding the Fourth Proportional to 7,151.10, 10,730.85 and 2,990.76

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Solution

The fourth proportional to 7,151.10, 10,730.85 and 2,990.76 is: 4,487.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,151.10 : 10,730.85 = 2,990.76 : x
  2. Step 2: Convert to fraction form
    7,151.10/10,730.85 = 2,990.76/x
  3. Step 3: Cross multiply
    7,151.10x = 10,730.85 × 2,990.76
  4. Step 4: Simplify right side
    7,151.10x = 32,093,396.95
  5. Step 5: Solve for x
    x = 32,093,396.95/7,151.10
  6. Step 6: Final answer
    x = 4,487.90

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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.