Home / 2,854.28-4,278.35-1,866.72

Finding the Fourth Proportional to 2,854.28, 4,278.35 and 1,866.72

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Solution

The fourth proportional to 2,854.28, 4,278.35 and 1,866.72 is: 2,798.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,854.28 : 4,278.35 = 1,866.72 : x
  2. Step 2: Convert to fraction form
    2,854.28/4,278.35 = 1,866.72/x
  3. Step 3: Cross multiply
    2,854.28x = 4,278.35 × 1,866.72
  4. Step 4: Simplify right side
    2,854.28x = 7,986,502.22
  5. Step 5: Solve for x
    x = 7,986,502.22/2,854.28
  6. Step 6: Final answer
    x = 2,798.08

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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.