Home / 2,778.20-4,159.20-2,632.40

Finding the Fourth Proportional to 2,778.20, 4,159.20 and 2,632.40

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Solution

The fourth proportional to 2,778.20, 4,159.20 and 2,632.40 is: 3,940.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.20 : 4,159.20 = 2,632.40 : x
  2. Step 2: Convert to fraction form
    2,778.20/4,159.20 = 2,632.40/x
  3. Step 3: Cross multiply
    2,778.20x = 4,159.20 × 2,632.40
  4. Step 4: Simplify right side
    2,778.20x = 10,948,678.08
  5. Step 5: Solve for x
    x = 10,948,678.08/2,778.20
  6. Step 6: Final answer
    x = 3,940.93

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1.5x scale

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.