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Finding the Fourth Proportional to 2,064.10, 3,096.30 and 831.52

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Solution

The fourth proportional to 2,064.10, 3,096.30 and 831.52 is: 1,247.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,064.10 : 3,096.30 = 831.52 : x
  2. Step 2: Convert to fraction form
    2,064.10/3,096.30 = 831.52/x
  3. Step 3: Cross multiply
    2,064.10x = 3,096.30 × 831.52
  4. Step 4: Simplify right side
    2,064.10x = 2,574,615.74
  5. Step 5: Solve for x
    x = 2,574,615.74/2,064.10
  6. Step 6: Final answer
    x = 1,247.33

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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.