Home / 7,922.16-10,937.70-4,939.20

Finding the Fourth Proportional to 7,922.16, 10,937.70 and 4,939.20

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Solution

The fourth proportional to 7,922.16, 10,937.70 and 4,939.20 is: 6,819.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,922.16 : 10,937.70 = 4,939.20 : x
  2. Step 2: Convert to fraction form
    7,922.16/10,937.70 = 4,939.20/x
  3. Step 3: Cross multiply
    7,922.16x = 10,937.70 × 4,939.20
  4. Step 4: Simplify right side
    7,922.16x = 54,023,487.84
  5. Step 5: Solve for x
    x = 54,023,487.84/7,922.16
  6. Step 6: Final answer
    x = 6,819.29

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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.