Home / 7,140.53-10,712.41-3,853.55

Finding the Fourth Proportional to 7,140.53, 10,712.41 and 3,853.55

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Solution

The fourth proportional to 7,140.53, 10,712.41 and 3,853.55 is: 5,781.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.53 : 10,712.41 = 3,853.55 : x
  2. Step 2: Convert to fraction form
    7,140.53/10,712.41 = 3,853.55/x
  3. Step 3: Cross multiply
    7,140.53x = 10,712.41 × 3,853.55
  4. Step 4: Simplify right side
    7,140.53x = 41,280,807.56
  5. Step 5: Solve for x
    x = 41,280,807.56/7,140.53
  6. Step 6: Final answer
    x = 5,781.20

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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.