Home / 3,841.20-5,756.40-1,530

Finding the Fourth Proportional to 3,841.20, 5,756.40 and 1,530

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Solution

The fourth proportional to 3,841.20, 5,756.40 and 1,530 is: 2,292.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,841.20 : 5,756.40 = 1,530 : x
  2. Step 2: Convert to fraction form
    3,841.20/5,756.40 = 1,530/x
  3. Step 3: Cross multiply
    3,841.20x = 5,756.40 × 1,530
  4. Step 4: Simplify right side
    3,841.20x = 8,807,292
  5. Step 5: Solve for x
    x = 8,807,292/3,841.20
  6. Step 6: Final answer
    x = 2,292.85

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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.