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Finding the Fourth Proportional to 8,973.63, 12,382.28 and 5,387.83

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Solution

The fourth proportional to 8,973.63, 12,382.28 and 5,387.83 is: 7,434.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,973.63 : 12,382.28 = 5,387.83 : x
  2. Step 2: Convert to fraction form
    8,973.63/12,382.28 = 5,387.83/x
  3. Step 3: Cross multiply
    8,973.63x = 12,382.28 × 5,387.83
  4. Step 4: Simplify right side
    8,973.63x = 66,713,619.65
  5. Step 5: Solve for x
    x = 66,713,619.65/8,973.63
  6. Step 6: Final answer
    x = 7,434.41

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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.