Home / 5,247.72-7,805.43-4,780.20

Finding the Fourth Proportional to 5,247.72, 7,805.43 and 4,780.20

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Solution

The fourth proportional to 5,247.72, 7,805.43 and 4,780.20 is: 7,110.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,247.72 : 7,805.43 = 4,780.20 : x
  2. Step 2: Convert to fraction form
    5,247.72/7,805.43 = 4,780.20/x
  3. Step 3: Cross multiply
    5,247.72x = 7,805.43 × 4,780.20
  4. Step 4: Simplify right side
    5,247.72x = 37,311,516.49
  5. Step 5: Solve for x
    x = 37,311,516.49/5,247.72
  6. Step 6: Final answer
    x = 7,110.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.