Home / 5,153.20-7,715.95-4,239.78

Finding the Fourth Proportional to 5,153.20, 7,715.95 and 4,239.78

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Solution

The fourth proportional to 5,153.20, 7,715.95 and 4,239.78 is: 6,348.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,153.20 : 7,715.95 = 4,239.78 : x
  2. Step 2: Convert to fraction form
    5,153.20/7,715.95 = 4,239.78/x
  3. Step 3: Cross multiply
    5,153.20x = 7,715.95 × 4,239.78
  4. Step 4: Simplify right side
    5,153.20x = 32,713,930.49
  5. Step 5: Solve for x
    x = 32,713,930.49/5,153.20
  6. Step 6: Final answer
    x = 6,348.27

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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.