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Finding the Fourth Proportional to 2,979.13, 4,468.69 and 927.13

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Solution

The fourth proportional to 2,979.13, 4,468.69 and 927.13 is: 1,390.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.13 : 4,468.69 = 927.13 : x
  2. Step 2: Convert to fraction form
    2,979.13/4,468.69 = 927.13/x
  3. Step 3: Cross multiply
    2,979.13x = 4,468.69 × 927.13
  4. Step 4: Simplify right side
    2,979.13x = 4,143,056.56
  5. Step 5: Solve for x
    x = 4,143,056.56/2,979.13
  6. Step 6: Final answer
    x = 1,390.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.