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Finding the Fourth Proportional to 8,722.22, 12,036.80 and 4,743.40

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Solution

The fourth proportional to 8,722.22, 12,036.80 and 4,743.40 is: 6,545.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,722.22 : 12,036.80 = 4,743.40 : x
  2. Step 2: Convert to fraction form
    8,722.22/12,036.80 = 4,743.40/x
  3. Step 3: Cross multiply
    8,722.22x = 12,036.80 × 4,743.40
  4. Step 4: Simplify right side
    8,722.22x = 57,095,357.12
  5. Step 5: Solve for x
    x = 57,095,357.12/8,722.22
  6. Step 6: Final answer
    x = 6,545.97

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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.