Home / 5,425.95-8,139.84-1,915.83

Finding the Fourth Proportional to 5,425.95, 8,139.84 and 1,915.83

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Solution

The fourth proportional to 5,425.95, 8,139.84 and 1,915.83 is: 2,874.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,425.95 : 8,139.84 = 1,915.83 : x
  2. Step 2: Convert to fraction form
    5,425.95/8,139.84 = 1,915.83/x
  3. Step 3: Cross multiply
    5,425.95x = 8,139.84 × 1,915.83
  4. Step 4: Simplify right side
    5,425.95x = 15,594,549.67
  5. Step 5: Solve for x
    x = 15,594,549.67/5,425.95
  6. Step 6: Final answer
    x = 2,874.07

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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.