Home / 1,521.51-2,280.30-697.97

Finding the Fourth Proportional to 1,521.51, 2,280.30 and 697.97

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Solution

The fourth proportional to 1,521.51, 2,280.30 and 697.97 is: 1,046.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.51 : 2,280.30 = 697.97 : x
  2. Step 2: Convert to fraction form
    1,521.51/2,280.30 = 697.97/x
  3. Step 3: Cross multiply
    1,521.51x = 2,280.30 × 697.97
  4. Step 4: Simplify right side
    1,521.51x = 1,591,569.59
  5. Step 5: Solve for x
    x = 1,591,569.59/1,521.51
  6. Step 6: Final answer
    x = 1,046.05

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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.