Home / 3,238.80-4,470.30-1,913.10

Finding the Fourth Proportional to 3,238.80, 4,470.30 and 1,913.10

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Solution

The fourth proportional to 3,238.80, 4,470.30 and 1,913.10 is: 2,640.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,238.80 : 4,470.30 = 1,913.10 : x
  2. Step 2: Convert to fraction form
    3,238.80/4,470.30 = 1,913.10/x
  3. Step 3: Cross multiply
    3,238.80x = 4,470.30 × 1,913.10
  4. Step 4: Simplify right side
    3,238.80x = 8,552,130.93
  5. Step 5: Solve for x
    x = 8,552,130.93/3,238.80
  6. Step 6: Final answer
    x = 2,640.52

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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.