Home / 2,320.17-3,480-1,087.81

Finding the Fourth Proportional to 2,320.17, 3,480 and 1,087.81

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Solution

The fourth proportional to 2,320.17, 3,480 and 1,087.81 is: 1,631.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,320.17 : 3,480 = 1,087.81 : x
  2. Step 2: Convert to fraction form
    2,320.17/3,480 = 1,087.81/x
  3. Step 3: Cross multiply
    2,320.17x = 3,480 × 1,087.81
  4. Step 4: Simplify right side
    2,320.17x = 3,785,578.80
  5. Step 5: Solve for x
    x = 3,785,578.80/2,320.17
  6. Step 6: Final answer
    x = 1,631.60

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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.