Home / 5,426.88-8,139.60-1,531.60

Finding the Fourth Proportional to 5,426.88, 8,139.60 and 1,531.60

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Solution

The fourth proportional to 5,426.88, 8,139.60 and 1,531.60 is: 2,297.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,426.88 : 8,139.60 = 1,531.60 : x
  2. Step 2: Convert to fraction form
    5,426.88/8,139.60 = 1,531.60/x
  3. Step 3: Cross multiply
    5,426.88x = 8,139.60 × 1,531.60
  4. Step 4: Simplify right side
    5,426.88x = 12,466,611.36
  5. Step 5: Solve for x
    x = 12,466,611.36/5,426.88
  6. Step 6: Final answer
    x = 2,297.20

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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.