Home / 4,979.20-6,870.92-2,854.71

Finding the Fourth Proportional to 4,979.20, 6,870.92 and 2,854.71

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Solution

The fourth proportional to 4,979.20, 6,870.92 and 2,854.71 is: 3,939.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.20 : 6,870.92 = 2,854.71 : x
  2. Step 2: Convert to fraction form
    4,979.20/6,870.92 = 2,854.71/x
  3. Step 3: Cross multiply
    4,979.20x = 6,870.92 × 2,854.71
  4. Step 4: Simplify right side
    4,979.20x = 19,614,484.03
  5. Step 5: Solve for x
    x = 19,614,484.03/4,979.20
  6. Step 6: Final answer
    x = 3,939.28

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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.