Home / 3,320.28-4,590.72-2,905.20

Finding the Fourth Proportional to 3,320.28, 4,590.72 and 2,905.20

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Solution

The fourth proportional to 3,320.28, 4,590.72 and 2,905.20 is: 4,016.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,320.28 : 4,590.72 = 2,905.20 : x
  2. Step 2: Convert to fraction form
    3,320.28/4,590.72 = 2,905.20/x
  3. Step 3: Cross multiply
    3,320.28x = 4,590.72 × 2,905.20
  4. Step 4: Simplify right side
    3,320.28x = 13,336,959.74
  5. Step 5: Solve for x
    x = 13,336,959.74/3,320.28
  6. Step 6: Final answer
    x = 4,016.82

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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.