Home / 3,174.08-4,387.20-2,798.40

Finding the Fourth Proportional to 3,174.08, 4,387.20 and 2,798.40

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Solution

The fourth proportional to 3,174.08, 4,387.20 and 2,798.40 is: 3,867.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,174.08 : 4,387.20 = 2,798.40 : x
  2. Step 2: Convert to fraction form
    3,174.08/4,387.20 = 2,798.40/x
  3. Step 3: Cross multiply
    3,174.08x = 4,387.20 × 2,798.40
  4. Step 4: Simplify right side
    3,174.08x = 12,277,140.48
  5. Step 5: Solve for x
    x = 12,277,140.48/3,174.08
  6. Step 6: Final answer
    x = 3,867.94

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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.