Home / 5,902.45-8,144.40-3,915.70

Finding the Fourth Proportional to 5,902.45, 8,144.40 and 3,915.70

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Solution

The fourth proportional to 5,902.45, 8,144.40 and 3,915.70 is: 5,403.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,902.45 : 8,144.40 = 3,915.70 : x
  2. Step 2: Convert to fraction form
    5,902.45/8,144.40 = 3,915.70/x
  3. Step 3: Cross multiply
    5,902.45x = 8,144.40 × 3,915.70
  4. Step 4: Simplify right side
    5,902.45x = 31,891,027.08
  5. Step 5: Solve for x
    x = 31,891,027.08/5,902.45
  6. Step 6: Final answer
    x = 5,403.02

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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.