Home / 8,157.79-11,240.94-6,269.28

Finding the Fourth Proportional to 8,157.79, 11,240.94 and 6,269.28

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Solution

The fourth proportional to 8,157.79, 11,240.94 and 6,269.28 is: 8,638.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,157.79 : 11,240.94 = 6,269.28 : x
  2. Step 2: Convert to fraction form
    8,157.79/11,240.94 = 6,269.28/x
  3. Step 3: Cross multiply
    8,157.79x = 11,240.94 × 6,269.28
  4. Step 4: Simplify right side
    8,157.79x = 70,472,600.32
  5. Step 5: Solve for x
    x = 70,472,600.32/8,157.79
  6. Step 6: Final answer
    x = 8,638.69

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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.