Home / 2,877.75-3,971.34-1,831.23

Finding the Fourth Proportional to 2,877.75, 3,971.34 and 1,831.23

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Solution

The fourth proportional to 2,877.75, 3,971.34 and 1,831.23 is: 2,527.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,877.75 : 3,971.34 = 1,831.23 : x
  2. Step 2: Convert to fraction form
    2,877.75/3,971.34 = 1,831.23/x
  3. Step 3: Cross multiply
    2,877.75x = 3,971.34 × 1,831.23
  4. Step 4: Simplify right side
    2,877.75x = 7,272,436.95
  5. Step 5: Solve for x
    x = 7,272,436.95/2,877.75
  6. Step 6: Final answer
    x = 2,527.13

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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.