Home / 2,254.60-3,111.29-1,259.89

Finding the Fourth Proportional to 2,254.60, 3,111.29 and 1,259.89

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Solution

The fourth proportional to 2,254.60, 3,111.29 and 1,259.89 is: 1,738.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,254.60 : 3,111.29 = 1,259.89 : x
  2. Step 2: Convert to fraction form
    2,254.60/3,111.29 = 1,259.89/x
  3. Step 3: Cross multiply
    2,254.60x = 3,111.29 × 1,259.89
  4. Step 4: Simplify right side
    2,254.60x = 3,919,875.38
  5. Step 5: Solve for x
    x = 3,919,875.38/2,254.60
  6. Step 6: Final answer
    x = 1,738.61

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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.