Home / 2,567.50-3,543.14-1,388.56

Finding the Fourth Proportional to 2,567.50, 3,543.14 and 1,388.56

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Solution

The fourth proportional to 2,567.50, 3,543.14 and 1,388.56 is: 1,916.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,567.50 : 3,543.14 = 1,388.56 : x
  2. Step 2: Convert to fraction form
    2,567.50/3,543.14 = 1,388.56/x
  3. Step 3: Cross multiply
    2,567.50x = 3,543.14 × 1,388.56
  4. Step 4: Simplify right side
    2,567.50x = 4,919,862.48
  5. Step 5: Solve for x
    x = 4,919,862.48/2,567.50
  6. Step 6: Final answer
    x = 1,916.21

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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.