Home / 2,254.22-3,111.18-1,369.70

Finding the Fourth Proportional to 2,254.22, 3,111.18 and 1,369.70

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Solution

The fourth proportional to 2,254.22, 3,111.18 and 1,369.70 is: 1,890.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,254.22 : 3,111.18 = 1,369.70 : x
  2. Step 2: Convert to fraction form
    2,254.22/3,111.18 = 1,369.70/x
  3. Step 3: Cross multiply
    2,254.22x = 3,111.18 × 1,369.70
  4. Step 4: Simplify right side
    2,254.22x = 4,261,376.40
  5. Step 5: Solve for x
    x = 4,261,376.40/2,254.22
  6. Step 6: Final answer
    x = 1,890.40

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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.