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Finding the Fourth Proportional to 7,849.70, 10,832.70 and 4,312.88

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Solution

The fourth proportional to 7,849.70, 10,832.70 and 4,312.88 is: 5,951.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,849.70 : 10,832.70 = 4,312.88 : x
  2. Step 2: Convert to fraction form
    7,849.70/10,832.70 = 4,312.88/x
  3. Step 3: Cross multiply
    7,849.70x = 10,832.70 × 4,312.88
  4. Step 4: Simplify right side
    7,849.70x = 46,720,135.18
  5. Step 5: Solve for x
    x = 46,720,135.18/7,849.70
  6. Step 6: Final answer
    x = 5,951.84

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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.