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Finding the Fourth Proportional to 7,144.80, 9,848.16 and 5,152.56

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Solution

The fourth proportional to 7,144.80, 9,848.16 and 5,152.56 is: 7,102.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,144.80 : 9,848.16 = 5,152.56 : x
  2. Step 2: Convert to fraction form
    7,144.80/9,848.16 = 5,152.56/x
  3. Step 3: Cross multiply
    7,144.80x = 9,848.16 × 5,152.56
  4. Step 4: Simplify right side
    7,144.80x = 50,743,235.29
  5. Step 5: Solve for x
    x = 50,743,235.29/7,144.80
  6. Step 6: Final answer
    x = 7,102.12

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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.