Home / 2,073.20-2,857.68-1,630.40

Finding the Fourth Proportional to 2,073.20, 2,857.68 and 1,630.40

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Solution

The fourth proportional to 2,073.20, 2,857.68 and 1,630.40 is: 2,247.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,073.20 : 2,857.68 = 1,630.40 : x
  2. Step 2: Convert to fraction form
    2,073.20/2,857.68 = 1,630.40/x
  3. Step 3: Cross multiply
    2,073.20x = 2,857.68 × 1,630.40
  4. Step 4: Simplify right side
    2,073.20x = 4,659,161.47
  5. Step 5: Solve for x
    x = 4,659,161.47/2,073.20
  6. Step 6: Final answer
    x = 2,247.33

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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.