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Finding the Fourth Proportional to 7,345.56, 10,138.11 and 7,102.56

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Solution

The fourth proportional to 7,345.56, 10,138.11 and 7,102.56 is: 9,802.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,345.56 : 10,138.11 = 7,102.56 : x
  2. Step 2: Convert to fraction form
    7,345.56/10,138.11 = 7,102.56/x
  3. Step 3: Cross multiply
    7,345.56x = 10,138.11 × 7,102.56
  4. Step 4: Simplify right side
    7,345.56x = 72,006,534.56
  5. Step 5: Solve for x
    x = 72,006,534.56/7,345.56
  6. Step 6: Final answer
    x = 9,802.73

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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.