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Finding the Fourth Proportional to 8,722.32, 12,043.02 and 5,369.64

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Solution

The fourth proportional to 8,722.32, 12,043.02 and 5,369.64 is: 7,413.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,722.32 : 12,043.02 = 5,369.64 : x
  2. Step 2: Convert to fraction form
    8,722.32/12,043.02 = 5,369.64/x
  3. Step 3: Cross multiply
    8,722.32x = 12,043.02 × 5,369.64
  4. Step 4: Simplify right side
    8,722.32x = 64,666,681.91
  5. Step 5: Solve for x
    x = 64,666,681.91/8,722.32
  6. Step 6: Final answer
    x = 7,413.93

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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.