Home / 3,869.78-5,341.14-2,543.60

Finding the Fourth Proportional to 3,869.78, 5,341.14 and 2,543.60

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Solution

The fourth proportional to 3,869.78, 5,341.14 and 2,543.60 is: 3,510.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.78 : 5,341.14 = 2,543.60 : x
  2. Step 2: Convert to fraction form
    3,869.78/5,341.14 = 2,543.60/x
  3. Step 3: Cross multiply
    3,869.78x = 5,341.14 × 2,543.60
  4. Step 4: Simplify right side
    3,869.78x = 13,585,737.06
  5. Step 5: Solve for x
    x = 13,585,737.06/3,869.78
  6. Step 6: Final answer
    x = 3,510.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.