Home / 8,269.28-11,412.36-5,436.80

Finding the Fourth Proportional to 8,269.28, 11,412.36 and 5,436.80

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Solution

The fourth proportional to 8,269.28, 11,412.36 and 5,436.80 is: 7,503.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,269.28 : 11,412.36 = 5,436.80 : x
  2. Step 2: Convert to fraction form
    8,269.28/11,412.36 = 5,436.80/x
  3. Step 3: Cross multiply
    8,269.28x = 11,412.36 × 5,436.80
  4. Step 4: Simplify right side
    8,269.28x = 62,046,718.85
  5. Step 5: Solve for x
    x = 62,046,718.85/8,269.28
  6. Step 6: Final answer
    x = 7,503.28

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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.