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Finding the Fourth Proportional to 8,681.64, 13,022.40 and 2,836.92

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Solution

The fourth proportional to 8,681.64, 13,022.40 and 2,836.92 is: 4,255.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,681.64 : 13,022.40 = 2,836.92 : x
  2. Step 2: Convert to fraction form
    8,681.64/13,022.40 = 2,836.92/x
  3. Step 3: Cross multiply
    8,681.64x = 13,022.40 × 2,836.92
  4. Step 4: Simplify right side
    8,681.64x = 36,943,507.01
  5. Step 5: Solve for x
    x = 36,943,507.01/8,681.64
  6. Step 6: Final answer
    x = 4,255.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.