Home / 5,915.98-8,163.28-3,398.20

Finding the Fourth Proportional to 5,915.98, 8,163.28 and 3,398.20

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Solution

The fourth proportional to 5,915.98, 8,163.28 and 3,398.20 is: 4,689.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,915.98 : 8,163.28 = 3,398.20 : x
  2. Step 2: Convert to fraction form
    5,915.98/8,163.28 = 3,398.20/x
  3. Step 3: Cross multiply
    5,915.98x = 8,163.28 × 3,398.20
  4. Step 4: Simplify right side
    5,915.98x = 27,740,458.10
  5. Step 5: Solve for x
    x = 27,740,458.10/5,915.98
  6. Step 6: Final answer
    x = 4,689.07

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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.