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Finding the Fourth Proportional to 7,913.83, 10,917.07 and 7,351.02

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Solution

The fourth proportional to 7,913.83, 10,917.07 and 7,351.02 is: 10,140.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,913.83 : 10,917.07 = 7,351.02 : x
  2. Step 2: Convert to fraction form
    7,913.83/10,917.07 = 7,351.02/x
  3. Step 3: Cross multiply
    7,913.83x = 10,917.07 × 7,351.02
  4. Step 4: Simplify right side
    7,913.83x = 80,251,599.91
  5. Step 5: Solve for x
    x = 80,251,599.91/7,913.83
  6. Step 6: Final answer
    x = 10,140.68

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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.