Home / 2,979.03-4,108.55-2,814.87

Finding the Fourth Proportional to 2,979.03, 4,108.55 and 2,814.87

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Solution

The fourth proportional to 2,979.03, 4,108.55 and 2,814.87 is: 3,882.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.03 : 4,108.55 = 2,814.87 : x
  2. Step 2: Convert to fraction form
    2,979.03/4,108.55 = 2,814.87/x
  3. Step 3: Cross multiply
    2,979.03x = 4,108.55 × 2,814.87
  4. Step 4: Simplify right side
    2,979.03x = 11,565,020.06
  5. Step 5: Solve for x
    x = 11,565,020.06/2,979.03
  6. Step 6: Final answer
    x = 3,882.14

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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.