Home / 5,685.31-8,531.50-2,175.60

Finding the Fourth Proportional to 5,685.31, 8,531.50 and 2,175.60

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Solution

The fourth proportional to 5,685.31, 8,531.50 and 2,175.60 is: 3,264.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,685.31 : 8,531.50 = 2,175.60 : x
  2. Step 2: Convert to fraction form
    5,685.31/8,531.50 = 2,175.60/x
  3. Step 3: Cross multiply
    5,685.31x = 8,531.50 × 2,175.60
  4. Step 4: Simplify right side
    5,685.31x = 18,561,131.40
  5. Step 5: Solve for x
    x = 18,561,131.40/5,685.31
  6. Step 6: Final answer
    x = 3,264.75

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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.