Home / 2,828.71-4,240.23-1,853.47

Finding the Fourth Proportional to 2,828.71, 4,240.23 and 1,853.47

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Solution

The fourth proportional to 2,828.71, 4,240.23 and 1,853.47 is: 2,778.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,828.71 : 4,240.23 = 1,853.47 : x
  2. Step 2: Convert to fraction form
    2,828.71/4,240.23 = 1,853.47/x
  3. Step 3: Cross multiply
    2,828.71x = 4,240.23 × 1,853.47
  4. Step 4: Simplify right side
    2,828.71x = 7,859,139.10
  5. Step 5: Solve for x
    x = 7,859,139.10/2,828.71
  6. Step 6: Final answer
    x = 2,778.35

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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.