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Finding the Fourth Proportional to 7,242.60, 9,994.74 and 4,098.72

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Solution

The fourth proportional to 7,242.60, 9,994.74 and 4,098.72 is: 5,656.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,242.60 : 9,994.74 = 4,098.72 : x
  2. Step 2: Convert to fraction form
    7,242.60/9,994.74 = 4,098.72/x
  3. Step 3: Cross multiply
    7,242.60x = 9,994.74 × 4,098.72
  4. Step 4: Simplify right side
    7,242.60x = 40,965,640.73
  5. Step 5: Solve for x
    x = 40,965,640.73/7,242.60
  6. Step 6: Final answer
    x = 5,656.21

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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.