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Finding the Fourth Proportional to 9,326.61, 13,992.48 and 7,758.18

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Solution

The fourth proportional to 9,326.61, 13,992.48 and 7,758.18 is: 11,639.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,326.61 : 13,992.48 = 7,758.18 : x
  2. Step 2: Convert to fraction form
    9,326.61/13,992.48 = 7,758.18/x
  3. Step 3: Cross multiply
    9,326.61x = 13,992.48 × 7,758.18
  4. Step 4: Simplify right side
    9,326.61x = 108,556,178.49
  5. Step 5: Solve for x
    x = 108,556,178.49/9,326.61
  6. Step 6: Final answer
    x = 11,639.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.