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Finding the Fourth Proportional to 8,500.42, 12,750.78 and 2,953.95

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Solution

The fourth proportional to 8,500.42, 12,750.78 and 2,953.95 is: 4,430.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,500.42 : 12,750.78 = 2,953.95 : x
  2. Step 2: Convert to fraction form
    8,500.42/12,750.78 = 2,953.95/x
  3. Step 3: Cross multiply
    8,500.42x = 12,750.78 × 2,953.95
  4. Step 4: Simplify right side
    8,500.42x = 37,665,129.84
  5. Step 5: Solve for x
    x = 37,665,129.84/8,500.42
  6. Step 6: Final answer
    x = 4,430.97

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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.