Home / 2,020.70-3,031.27-788.23

Finding the Fourth Proportional to 2,020.70, 3,031.27 and 788.23

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Solution

The fourth proportional to 2,020.70, 3,031.27 and 788.23 is: 1,182.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,020.70 : 3,031.27 = 788.23 : x
  2. Step 2: Convert to fraction form
    2,020.70/3,031.27 = 788.23/x
  3. Step 3: Cross multiply
    2,020.70x = 3,031.27 × 788.23
  4. Step 4: Simplify right side
    2,020.70x = 2,389,344.20
  5. Step 5: Solve for x
    x = 2,389,344.20/2,020.70
  6. Step 6: Final answer
    x = 1,182.44

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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.