Home / 2,813.28-3,880.80-1,763.52

Finding the Fourth Proportional to 2,813.28, 3,880.80 and 1,763.52

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Solution

The fourth proportional to 2,813.28, 3,880.80 and 1,763.52 is: 2,432.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,813.28 : 3,880.80 = 1,763.52 : x
  2. Step 2: Convert to fraction form
    2,813.28/3,880.80 = 1,763.52/x
  3. Step 3: Cross multiply
    2,813.28x = 3,880.80 × 1,763.52
  4. Step 4: Simplify right side
    2,813.28x = 6,843,868.42
  5. Step 5: Solve for x
    x = 6,843,868.42/2,813.28
  6. Step 6: Final answer
    x = 2,432.70

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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.