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Finding the Fourth Proportional to 8,853.24, 12,222.72 and 7,869.18

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Solution

The fourth proportional to 8,853.24, 12,222.72 and 7,869.18 is: 10,864.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,853.24 : 12,222.72 = 7,869.18 : x
  2. Step 2: Convert to fraction form
    8,853.24/12,222.72 = 7,869.18/x
  3. Step 3: Cross multiply
    8,853.24x = 12,222.72 × 7,869.18
  4. Step 4: Simplify right side
    8,853.24x = 96,182,783.77
  5. Step 5: Solve for x
    x = 96,182,783.77/8,853.24
  6. Step 6: Final answer
    x = 10,864.13

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Find fourth proportional to 8,854.24, 12,224.10 and 7,870.18
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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.