Home / 5,191.20-7,781.04-2,070

Finding the Fourth Proportional to 5,191.20, 7,781.04 and 2,070

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Solution

The fourth proportional to 5,191.20, 7,781.04 and 2,070 is: 3,102.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,191.20 : 7,781.04 = 2,070 : x
  2. Step 2: Convert to fraction form
    5,191.20/7,781.04 = 2,070/x
  3. Step 3: Cross multiply
    5,191.20x = 7,781.04 × 2,070
  4. Step 4: Simplify right side
    5,191.20x = 16,106,752.80
  5. Step 5: Solve for x
    x = 16,106,752.80/5,191.20
  6. Step 6: Final answer
    x = 3,102.70

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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.