Home / 2,567.21-3,542.75-1,388.28

Finding the Fourth Proportional to 2,567.21, 3,542.75 and 1,388.28

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Solution

The fourth proportional to 2,567.21, 3,542.75 and 1,388.28 is: 1,915.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,567.21 : 3,542.75 = 1,388.28 : x
  2. Step 2: Convert to fraction form
    2,567.21/3,542.75 = 1,388.28/x
  3. Step 3: Cross multiply
    2,567.21x = 3,542.75 × 1,388.28
  4. Step 4: Simplify right side
    2,567.21x = 4,918,328.97
  5. Step 5: Solve for x
    x = 4,918,328.97/2,567.21
  6. Step 6: Final answer
    x = 1,915.83

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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.