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Finding the Fourth Proportional to 2,641.52, 3,962.24 and 693.60

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Solution

The fourth proportional to 2,641.52, 3,962.24 and 693.60 is: 1,040.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,641.52 : 3,962.24 = 693.60 : x
  2. Step 2: Convert to fraction form
    2,641.52/3,962.24 = 693.60/x
  3. Step 3: Cross multiply
    2,641.52x = 3,962.24 × 693.60
  4. Step 4: Simplify right side
    2,641.52x = 2,748,209.66
  5. Step 5: Solve for x
    x = 2,748,209.66/2,641.52
  6. Step 6: Final answer
    x = 1,040.39

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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.