Home / 2,320.19-3,480.13-1,087.87

Finding the Fourth Proportional to 2,320.19, 3,480.13 and 1,087.87

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Solution

The fourth proportional to 2,320.19, 3,480.13 and 1,087.87 is: 1,631.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,320.19 : 3,480.13 = 1,087.87 : x
  2. Step 2: Convert to fraction form
    2,320.19/3,480.13 = 1,087.87/x
  3. Step 3: Cross multiply
    2,320.19x = 3,480.13 × 1,087.87
  4. Step 4: Simplify right side
    2,320.19x = 3,785,929.02
  5. Step 5: Solve for x
    x = 3,785,929.02/2,320.19
  6. Step 6: Final answer
    x = 1,631.73

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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.