Home / 8,661.35-11,951.12-5,123.27

Finding the Fourth Proportional to 8,661.35, 11,951.12 and 5,123.27

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Solution

The fourth proportional to 8,661.35, 11,951.12 and 5,123.27 is: 7,069.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,661.35 : 11,951.12 = 5,123.27 : x
  2. Step 2: Convert to fraction form
    8,661.35/11,951.12 = 5,123.27/x
  3. Step 3: Cross multiply
    8,661.35x = 11,951.12 × 5,123.27
  4. Step 4: Simplify right side
    8,661.35x = 61,228,857.25
  5. Step 5: Solve for x
    x = 61,228,857.25/8,661.35
  6. Step 6: Final answer
    x = 7,069.20

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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.