Home / 8,898.40-12,279.42-5,266.80

Finding the Fourth Proportional to 8,898.40, 12,279.42 and 5,266.80

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Solution

The fourth proportional to 8,898.40, 12,279.42 and 5,266.80 is: 7,267.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,898.40 : 12,279.42 = 5,266.80 : x
  2. Step 2: Convert to fraction form
    8,898.40/12,279.42 = 5,266.80/x
  3. Step 3: Cross multiply
    8,898.40x = 12,279.42 × 5,266.80
  4. Step 4: Simplify right side
    8,898.40x = 64,673,249.26
  5. Step 5: Solve for x
    x = 64,673,249.26/8,898.40
  6. Step 6: Final answer
    x = 7,267.96

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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.