Home / 2,862.97-3,948.68-1,918.46

Finding the Fourth Proportional to 2,862.97, 3,948.68 and 1,918.46

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Solution

The fourth proportional to 2,862.97, 3,948.68 and 1,918.46 is: 2,645.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,862.97 : 3,948.68 = 1,918.46 : x
  2. Step 2: Convert to fraction form
    2,862.97/3,948.68 = 1,918.46/x
  3. Step 3: Cross multiply
    2,862.97x = 3,948.68 × 1,918.46
  4. Step 4: Simplify right side
    2,862.97x = 7,575,364.89
  5. Step 5: Solve for x
    x = 7,575,364.89/2,862.97
  6. Step 6: Final answer
    x = 2,645.99

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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.