Home / 1,948.59-2,686.77-1,248.75

Finding the Fourth Proportional to 1,948.59, 2,686.77 and 1,248.75

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Solution

The fourth proportional to 1,948.59, 2,686.77 and 1,248.75 is: 1,721.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.59 : 2,686.77 = 1,248.75 : x
  2. Step 2: Convert to fraction form
    1,948.59/2,686.77 = 1,248.75/x
  3. Step 3: Cross multiply
    1,948.59x = 2,686.77 × 1,248.75
  4. Step 4: Simplify right side
    1,948.59x = 3,355,104.04
  5. Step 5: Solve for x
    x = 3,355,104.04/1,948.59
  6. Step 6: Final answer
    x = 1,721.81

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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.