Home / 1,885.87-2,831.23-1,020.79

Finding the Fourth Proportional to 1,885.87, 2,831.23 and 1,020.79

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Solution

The fourth proportional to 1,885.87, 2,831.23 and 1,020.79 is: 1,532.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,885.87 : 2,831.23 = 1,020.79 : x
  2. Step 2: Convert to fraction form
    1,885.87/2,831.23 = 1,020.79/x
  3. Step 3: Cross multiply
    1,885.87x = 2,831.23 × 1,020.79
  4. Step 4: Simplify right side
    1,885.87x = 2,890,077.12
  5. Step 5: Solve for x
    x = 2,890,077.12/1,885.87
  6. Step 6: Final answer
    x = 1,532.49

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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.