Home / 2,555.19-3,831.98-1,257.57

Finding the Fourth Proportional to 2,555.19, 3,831.98 and 1,257.57

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Solution

The fourth proportional to 2,555.19, 3,831.98 and 1,257.57 is: 1,885.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,555.19 : 3,831.98 = 1,257.57 : x
  2. Step 2: Convert to fraction form
    2,555.19/3,831.98 = 1,257.57/x
  3. Step 3: Cross multiply
    2,555.19x = 3,831.98 × 1,257.57
  4. Step 4: Simplify right side
    2,555.19x = 4,818,976.80
  5. Step 5: Solve for x
    x = 4,818,976.80/2,555.19
  6. Step 6: Final answer
    x = 1,885.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.