Home / 4,909.55-7,360.20-1,989.90

Finding the Fourth Proportional to 4,909.55, 7,360.20 and 1,989.90

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Solution

The fourth proportional to 4,909.55, 7,360.20 and 1,989.90 is: 2,983.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,909.55 : 7,360.20 = 1,989.90 : x
  2. Step 2: Convert to fraction form
    4,909.55/7,360.20 = 1,989.90/x
  3. Step 3: Cross multiply
    4,909.55x = 7,360.20 × 1,989.90
  4. Step 4: Simplify right side
    4,909.55x = 14,646,061.98
  5. Step 5: Solve for x
    x = 14,646,061.98/4,909.55
  6. Step 6: Final answer
    x = 2,983.18

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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.