Home / 2,780.92-4,155.08-2,684.05

Finding the Fourth Proportional to 2,780.92, 4,155.08 and 2,684.05

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Solution

The fourth proportional to 2,780.92, 4,155.08 and 2,684.05 is: 4,010.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.92 : 4,155.08 = 2,684.05 : x
  2. Step 2: Convert to fraction form
    2,780.92/4,155.08 = 2,684.05/x
  3. Step 3: Cross multiply
    2,780.92x = 4,155.08 × 2,684.05
  4. Step 4: Simplify right side
    2,780.92x = 11,152,442.47
  5. Step 5: Solve for x
    x = 11,152,442.47/2,780.92
  6. Step 6: Final answer
    x = 4,010.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.