Home / 2,567.80-3,543.56-1,388.87

Finding the Fourth Proportional to 2,567.80, 3,543.56 and 1,388.87

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Solution

The fourth proportional to 2,567.80, 3,543.56 and 1,388.87 is: 1,916.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,567.80 : 3,543.56 = 1,388.87 : x
  2. Step 2: Convert to fraction form
    2,567.80/3,543.56 = 1,388.87/x
  3. Step 3: Cross multiply
    2,567.80x = 3,543.56 × 1,388.87
  4. Step 4: Simplify right side
    2,567.80x = 4,921,538.01
  5. Step 5: Solve for x
    x = 4,921,538.01/2,567.80
  6. Step 6: Final answer
    x = 1,916.64

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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.