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Finding the Fourth Proportional to 8,289.29, 12,374.42 and 7,043.51

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Solution

The fourth proportional to 8,289.29, 12,374.42 and 7,043.51 is: 10,514.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,289.29 : 12,374.42 = 7,043.51 : x
  2. Step 2: Convert to fraction form
    8,289.29/12,374.42 = 7,043.51/x
  3. Step 3: Cross multiply
    8,289.29x = 12,374.42 × 7,043.51
  4. Step 4: Simplify right side
    8,289.29x = 87,159,253.92
  5. Step 5: Solve for x
    x = 87,159,253.92/8,289.29
  6. Step 6: Final answer
    x = 10,514.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.