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Finding the Fourth Proportional to 9,368.80, 12,935.28 and 8,370.88

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Solution

The fourth proportional to 9,368.80, 12,935.28 and 8,370.88 is: 11,557.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,368.80 : 12,935.28 = 8,370.88 : x
  2. Step 2: Convert to fraction form
    9,368.80/12,935.28 = 8,370.88/x
  3. Step 3: Cross multiply
    9,368.80x = 12,935.28 × 8,370.88
  4. Step 4: Simplify right side
    9,368.80x = 108,279,676.65
  5. Step 5: Solve for x
    x = 108,279,676.65/9,368.80
  6. Step 6: Final answer
    x = 11,557.48

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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.