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Finding the Fourth Proportional to 9,379.61, 12,926.00 and 6,722.40

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Solution

The fourth proportional to 9,379.61, 12,926.00 and 6,722.40 is: 9,264.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,379.61 : 12,926.00 = 6,722.40 : x
  2. Step 2: Convert to fraction form
    9,379.61/12,926.00 = 6,722.40/x
  3. Step 3: Cross multiply
    9,379.61x = 12,926.00 × 6,722.40
  4. Step 4: Simplify right side
    9,379.61x = 86,893,708.79
  5. Step 5: Solve for x
    x = 86,893,708.79/9,379.61
  6. Step 6: Final answer
    x = 9,264.11

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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.