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Finding the Fourth Proportional to 8,340.48, 11,543.04 and 7,165.44

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Solution

The fourth proportional to 8,340.48, 11,543.04 and 7,165.44 is: 9,916.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,340.48 : 11,543.04 = 7,165.44 : x
  2. Step 2: Convert to fraction form
    8,340.48/11,543.04 = 7,165.44/x
  3. Step 3: Cross multiply
    8,340.48x = 11,543.04 × 7,165.44
  4. Step 4: Simplify right side
    8,340.48x = 82,710,960.54
  5. Step 5: Solve for x
    x = 82,710,960.54/8,340.48
  6. Step 6: Final answer
    x = 9,916.81

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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.