Home / 1,521.14-2,281.73-699.18

Finding the Fourth Proportional to 1,521.14, 2,281.73 and 699.18

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Solution

The fourth proportional to 1,521.14, 2,281.73 and 699.18 is: 1,048.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.14 : 2,281.73 = 699.18 : x
  2. Step 2: Convert to fraction form
    1,521.14/2,281.73 = 699.18/x
  3. Step 3: Cross multiply
    1,521.14x = 2,281.73 × 699.18
  4. Step 4: Simplify right side
    1,521.14x = 1,595,336.49
  5. Step 5: Solve for x
    x = 1,595,336.49/1,521.14
  6. Step 6: Final answer
    x = 1,048.78

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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.