Home / 1,813.20-2,711.70-1,521.60

Finding the Fourth Proportional to 1,813.20, 2,711.70 and 1,521.60

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Solution

The fourth proportional to 1,813.20, 2,711.70 and 1,521.60 is: 2,275.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,813.20 : 2,711.70 = 1,521.60 : x
  2. Step 2: Convert to fraction form
    1,813.20/2,711.70 = 1,521.60/x
  3. Step 3: Cross multiply
    1,813.20x = 2,711.70 × 1,521.60
  4. Step 4: Simplify right side
    1,813.20x = 4,126,122.72
  5. Step 5: Solve for x
    x = 4,126,122.72/1,813.20
  6. Step 6: Final answer
    x = 2,275.60

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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.