Home / 2,854.50-3,939.21-1,612.74

Finding the Fourth Proportional to 2,854.50, 3,939.21 and 1,612.74

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Solution

The fourth proportional to 2,854.50, 3,939.21 and 1,612.74 is: 2,225.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,854.50 : 3,939.21 = 1,612.74 : x
  2. Step 2: Convert to fraction form
    2,854.50/3,939.21 = 1,612.74/x
  3. Step 3: Cross multiply
    2,854.50x = 3,939.21 × 1,612.74
  4. Step 4: Simplify right side
    2,854.50x = 6,352,921.54
  5. Step 5: Solve for x
    x = 6,352,921.54/2,854.50
  6. Step 6: Final answer
    x = 2,225.58

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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.