Home / 2,910.74-4,358.71-1,920.55

Finding the Fourth Proportional to 2,910.74, 4,358.71 and 1,920.55

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Solution

The fourth proportional to 2,910.74, 4,358.71 and 1,920.55 is: 2,875.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,910.74 : 4,358.71 = 1,920.55 : x
  2. Step 2: Convert to fraction form
    2,910.74/4,358.71 = 1,920.55/x
  3. Step 3: Cross multiply
    2,910.74x = 4,358.71 × 1,920.55
  4. Step 4: Simplify right side
    2,910.74x = 8,371,132.43
  5. Step 5: Solve for x
    x = 8,371,132.43/2,910.74
  6. Step 6: Final answer
    x = 2,875.94

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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.