Home / 3,572.20-4,929.78-2,080.12

Finding the Fourth Proportional to 3,572.20, 4,929.78 and 2,080.12

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Solution

The fourth proportional to 3,572.20, 4,929.78 and 2,080.12 is: 2,870.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,572.20 : 4,929.78 = 2,080.12 : x
  2. Step 2: Convert to fraction form
    3,572.20/4,929.78 = 2,080.12/x
  3. Step 3: Cross multiply
    3,572.20x = 4,929.78 × 2,080.12
  4. Step 4: Simplify right side
    3,572.20x = 10,254,533.97
  5. Step 5: Solve for x
    x = 10,254,533.97/3,572.20
  6. Step 6: Final answer
    x = 2,870.65

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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.