Home / 8,811.98-12,159.68-5,275.11

Finding the Fourth Proportional to 8,811.98, 12,159.68 and 5,275.11

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Solution

The fourth proportional to 8,811.98, 12,159.68 and 5,275.11 is: 7,279.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.98 : 12,159.68 = 5,275.11 : x
  2. Step 2: Convert to fraction form
    8,811.98/12,159.68 = 5,275.11/x
  3. Step 3: Cross multiply
    8,811.98x = 12,159.68 × 5,275.11
  4. Step 4: Simplify right side
    8,811.98x = 64,143,623.19
  5. Step 5: Solve for x
    x = 64,143,623.19/8,811.98
  6. Step 6: Final answer
    x = 7,279.14

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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.