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Finding the Fourth Proportional to 8,368.50, 11,542.10 and 6,129.56

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Solution

The fourth proportional to 8,368.50, 11,542.10 and 6,129.56 is: 8,454.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,368.50 : 11,542.10 = 6,129.56 : x
  2. Step 2: Convert to fraction form
    8,368.50/11,542.10 = 6,129.56/x
  3. Step 3: Cross multiply
    8,368.50x = 11,542.10 × 6,129.56
  4. Step 4: Simplify right side
    8,368.50x = 70,747,994.48
  5. Step 5: Solve for x
    x = 70,747,994.48/8,368.50
  6. Step 6: Final answer
    x = 8,454.08

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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.