Home / 3,572.34-4,929.86-2,155.75

Finding the Fourth Proportional to 3,572.34, 4,929.86 and 2,155.75

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Solution

The fourth proportional to 3,572.34, 4,929.86 and 2,155.75 is: 2,974.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,572.34 : 4,929.86 = 2,155.75 : x
  2. Step 2: Convert to fraction form
    3,572.34/4,929.86 = 2,155.75/x
  3. Step 3: Cross multiply
    3,572.34x = 4,929.86 × 2,155.75
  4. Step 4: Simplify right side
    3,572.34x = 10,627,545.70
  5. Step 5: Solve for x
    x = 10,627,545.70/3,572.34
  6. Step 6: Final answer
    x = 2,974.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.