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Finding the Fourth Proportional to 3,437.80, 5,158.80 and 1,248.05

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Solution

The fourth proportional to 3,437.80, 5,158.80 and 1,248.05 is: 1,872.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,437.80 : 5,158.80 = 1,248.05 : x
  2. Step 2: Convert to fraction form
    3,437.80/5,158.80 = 1,248.05/x
  3. Step 3: Cross multiply
    3,437.80x = 5,158.80 × 1,248.05
  4. Step 4: Simplify right side
    3,437.80x = 6,438,453.24
  5. Step 5: Solve for x
    x = 6,438,453.24/3,437.80
  6. Step 6: Final answer
    x = 1,872.84

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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.