Home / 9,005.13-12,428.51-5,279.13

Finding the Fourth Proportional to 9,005.13, 12,428.51 and 5,279.13

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Solution

The fourth proportional to 9,005.13, 12,428.51 and 5,279.13 is: 7,286.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,005.13 : 12,428.51 = 5,279.13 : x
  2. Step 2: Convert to fraction form
    9,005.13/12,428.51 = 5,279.13/x
  3. Step 3: Cross multiply
    9,005.13x = 12,428.51 × 5,279.13
  4. Step 4: Simplify right side
    9,005.13x = 65,611,671.05
  5. Step 5: Solve for x
    x = 65,611,671.05/9,005.13
  6. Step 6: Final answer
    x = 7,286.04

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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.