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Finding the Fourth Proportional to 7,910.74, 10,917.04 and 4,374.18

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Solution

The fourth proportional to 7,910.74, 10,917.04 and 4,374.18 is: 6,036.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,910.74 : 10,917.04 = 4,374.18 : x
  2. Step 2: Convert to fraction form
    7,910.74/10,917.04 = 4,374.18/x
  3. Step 3: Cross multiply
    7,910.74x = 10,917.04 × 4,374.18
  4. Step 4: Simplify right side
    7,910.74x = 47,753,043.44
  5. Step 5: Solve for x
    x = 47,753,043.44/7,910.74
  6. Step 6: Final answer
    x = 6,036.49

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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.