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Finding the Fourth Proportional to 3,273.03, 4,909.55 and 807.90

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Solution

The fourth proportional to 3,273.03, 4,909.55 and 807.90 is: 1,211.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,273.03 : 4,909.55 = 807.90 : x
  2. Step 2: Convert to fraction form
    3,273.03/4,909.55 = 807.90/x
  3. Step 3: Cross multiply
    3,273.03x = 4,909.55 × 807.90
  4. Step 4: Simplify right side
    3,273.03x = 3,966,421.41
  5. Step 5: Solve for x
    x = 3,966,421.41/3,273.03
  6. Step 6: Final answer
    x = 1,211.85

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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.