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Finding the Fourth Proportional to 8,681.71, 13,023.48 and 2,838.31

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Solution

The fourth proportional to 8,681.71, 13,023.48 and 2,838.31 is: 4,257.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,681.71 : 13,023.48 = 2,838.31 : x
  2. Step 2: Convert to fraction form
    8,681.71/13,023.48 = 2,838.31/x
  3. Step 3: Cross multiply
    8,681.71x = 13,023.48 × 2,838.31
  4. Step 4: Simplify right side
    8,681.71x = 36,964,594.21
  5. Step 5: Solve for x
    x = 36,964,594.21/8,681.71
  6. Step 6: Final answer
    x = 4,257.76

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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.