Home / 1,910.96-2,638.28-1,248.92

Finding the Fourth Proportional to 1,910.96, 2,638.28 and 1,248.92

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Solution

The fourth proportional to 1,910.96, 2,638.28 and 1,248.92 is: 1,724.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,910.96 : 2,638.28 = 1,248.92 : x
  2. Step 2: Convert to fraction form
    1,910.96/2,638.28 = 1,248.92/x
  3. Step 3: Cross multiply
    1,910.96x = 2,638.28 × 1,248.92
  4. Step 4: Simplify right side
    1,910.96x = 3,294,994.41
  5. Step 5: Solve for x
    x = 3,294,994.41/1,910.96
  6. Step 6: Final answer
    x = 1,724.26

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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.