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Finding the Fourth Proportional to 3,340.42, 5,010.45 and 1,000.42

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Solution

The fourth proportional to 3,340.42, 5,010.45 and 1,000.42 is: 1,500.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,340.42 : 5,010.45 = 1,000.42 : x
  2. Step 2: Convert to fraction form
    3,340.42/5,010.45 = 1,000.42/x
  3. Step 3: Cross multiply
    3,340.42x = 5,010.45 × 1,000.42
  4. Step 4: Simplify right side
    3,340.42x = 5,012,554.39
  5. Step 5: Solve for x
    x = 5,012,554.39/3,340.42
  6. Step 6: Final answer
    x = 1,500.58

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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.