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Finding the Fourth Proportional to 9,338.70, 12,881.79 and 7,346.10

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Solution

The fourth proportional to 9,338.70, 12,881.79 and 7,346.10 is: 10,133.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,338.70 : 12,881.79 = 7,346.10 : x
  2. Step 2: Convert to fraction form
    9,338.70/12,881.79 = 7,346.10/x
  3. Step 3: Cross multiply
    9,338.70x = 12,881.79 × 7,346.10
  4. Step 4: Simplify right side
    9,338.70x = 94,630,917.52
  5. Step 5: Solve for x
    x = 94,630,917.52/9,338.70
  6. Step 6: Final answer
    x = 10,133.20

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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.