Home / 1,831.23-2,745.63-660.66

Finding the Fourth Proportional to 1,831.23, 2,745.63 and 660.66

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Solution

The fourth proportional to 1,831.23, 2,745.63 and 660.66 is: 990.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,831.23 : 2,745.63 = 660.66 : x
  2. Step 2: Convert to fraction form
    1,831.23/2,745.63 = 660.66/x
  3. Step 3: Cross multiply
    1,831.23x = 2,745.63 × 660.66
  4. Step 4: Simplify right side
    1,831.23x = 1,813,927.92
  5. Step 5: Solve for x
    x = 1,813,927.92/1,831.23
  6. Step 6: Final answer
    x = 990.55

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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.