Home / 2,948.78-4,069.82-1,689.91

Finding the Fourth Proportional to 2,948.78, 4,069.82 and 1,689.91

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Solution

The fourth proportional to 2,948.78, 4,069.82 and 1,689.91 is: 2,332.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,948.78 : 4,069.82 = 1,689.91 : x
  2. Step 2: Convert to fraction form
    2,948.78/4,069.82 = 1,689.91/x
  3. Step 3: Cross multiply
    2,948.78x = 4,069.82 × 1,689.91
  4. Step 4: Simplify right side
    2,948.78x = 6,877,600.72
  5. Step 5: Solve for x
    x = 6,877,600.72/2,948.78
  6. Step 6: Final answer
    x = 2,332.35

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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.