Home / 8,069.40-11,140.44-5,279.76

Finding the Fourth Proportional to 8,069.40, 11,140.44 and 5,279.76

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Solution

The fourth proportional to 8,069.40, 11,140.44 and 5,279.76 is: 7,289.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,069.40 : 11,140.44 = 5,279.76 : x
  2. Step 2: Convert to fraction form
    8,069.40/11,140.44 = 5,279.76/x
  3. Step 3: Cross multiply
    8,069.40x = 11,140.44 × 5,279.76
  4. Step 4: Simplify right side
    8,069.40x = 58,818,849.49
  5. Step 5: Solve for x
    x = 58,818,849.49/8,069.40
  6. Step 6: Final answer
    x = 7,289.12

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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.