Home / 2,818.90-4,230.18-1,521.28

Finding the Fourth Proportional to 2,818.90, 4,230.18 and 1,521.28

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Solution

The fourth proportional to 2,818.90, 4,230.18 and 1,521.28 is: 2,282.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.90 : 4,230.18 = 1,521.28 : x
  2. Step 2: Convert to fraction form
    2,818.90/4,230.18 = 1,521.28/x
  3. Step 3: Cross multiply
    2,818.90x = 4,230.18 × 1,521.28
  4. Step 4: Simplify right side
    2,818.90x = 6,435,288.23
  5. Step 5: Solve for x
    x = 6,435,288.23/2,818.90
  6. Step 6: Final answer
    x = 2,282.91

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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.