Home / 2,995.20-4,490.10-1,955.70

Finding the Fourth Proportional to 2,995.20, 4,490.10 and 1,955.70

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Solution

The fourth proportional to 2,995.20, 4,490.10 and 1,955.70 is: 2,931.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,995.20 : 4,490.10 = 1,955.70 : x
  2. Step 2: Convert to fraction form
    2,995.20/4,490.10 = 1,955.70/x
  3. Step 3: Cross multiply
    2,995.20x = 4,490.10 × 1,955.70
  4. Step 4: Simplify right side
    2,995.20x = 8,781,288.57
  5. Step 5: Solve for x
    x = 8,781,288.57/2,995.20
  6. Step 6: Final answer
    x = 2,931.79

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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.