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Finding the Fourth Proportional to 3,340.64, 5,010.78 and 1,000.66

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Solution

The fourth proportional to 3,340.64, 5,010.78 and 1,000.66 is: 1,500.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,340.64 : 5,010.78 = 1,000.66 : x
  2. Step 2: Convert to fraction form
    3,340.64/5,010.78 = 1,000.66/x
  3. Step 3: Cross multiply
    3,340.64x = 5,010.78 × 1,000.66
  4. Step 4: Simplify right side
    3,340.64x = 5,014,087.11
  5. Step 5: Solve for x
    x = 5,014,087.11/3,340.64
  6. Step 6: Final answer
    x = 1,500.94

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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.