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Finding the Fourth Proportional to 3,500.80, 4,831.10 and 1,928.89

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Solution

The fourth proportional to 3,500.80, 4,831.10 and 1,928.89 is: 2,661.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,500.80 : 4,831.10 = 1,928.89 : x
  2. Step 2: Convert to fraction form
    3,500.80/4,831.10 = 1,928.89/x
  3. Step 3: Cross multiply
    3,500.80x = 4,831.10 × 1,928.89
  4. Step 4: Simplify right side
    3,500.80x = 9,318,660.48
  5. Step 5: Solve for x
    x = 9,318,660.48/3,500.80
  6. Step 6: Final answer
    x = 2,661.87

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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.