Home / 2,320.90-3,479.40-1,087.66

Finding the Fourth Proportional to 2,320.90, 3,479.40 and 1,087.66

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Solution

The fourth proportional to 2,320.90, 3,479.40 and 1,087.66 is: 1,630.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,320.90 : 3,479.40 = 1,087.66 : x
  2. Step 2: Convert to fraction form
    2,320.90/3,479.40 = 1,087.66/x
  3. Step 3: Cross multiply
    2,320.90x = 3,479.40 × 1,087.66
  4. Step 4: Simplify right side
    2,320.90x = 3,784,404.20
  5. Step 5: Solve for x
    x = 3,784,404.20/2,320.90
  6. Step 6: Final answer
    x = 1,630.58

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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.