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Finding the Fourth Proportional to 10,300.74, 15,451.74 and 2,905.85

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Solution

The fourth proportional to 10,300.74, 15,451.74 and 2,905.85 is: 4,358.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,300.74 : 15,451.74 = 2,905.85 : x
  2. Step 2: Convert to fraction form
    10,300.74/15,451.74 = 2,905.85/x
  3. Step 3: Cross multiply
    10,300.74x = 15,451.74 × 2,905.85
  4. Step 4: Simplify right side
    10,300.74x = 44,900,361.42
  5. Step 5: Solve for x
    x = 44,900,361.42/10,300.74
  6. Step 6: Final answer
    x = 4,358.95

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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.