Home / 1,885.76-2,831.88-1,020.68

Finding the Fourth Proportional to 1,885.76, 2,831.88 and 1,020.68

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Solution

The fourth proportional to 1,885.76, 2,831.88 and 1,020.68 is: 1,532.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,885.76 : 2,831.88 = 1,020.68 : x
  2. Step 2: Convert to fraction form
    1,885.76/2,831.88 = 1,020.68/x
  3. Step 3: Cross multiply
    1,885.76x = 2,831.88 × 1,020.68
  4. Step 4: Simplify right side
    1,885.76x = 2,890,443.28
  5. Step 5: Solve for x
    x = 2,890,443.28/1,885.76
  6. Step 6: Final answer
    x = 1,532.77

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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.