Home / 3,531.47-5,295.51-1,308.78

Finding the Fourth Proportional to 3,531.47, 5,295.51 and 1,308.78

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Solution

The fourth proportional to 3,531.47, 5,295.51 and 1,308.78 is: 1,962.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,531.47 : 5,295.51 = 1,308.78 : x
  2. Step 2: Convert to fraction form
    3,531.47/5,295.51 = 1,308.78/x
  3. Step 3: Cross multiply
    3,531.47x = 5,295.51 × 1,308.78
  4. Step 4: Simplify right side
    3,531.47x = 6,930,657.58
  5. Step 5: Solve for x
    x = 6,930,657.58/3,531.47
  6. Step 6: Final answer
    x = 1,962.54

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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.