Home / 2,020.05-3,031.29-788.45

Finding the Fourth Proportional to 2,020.05, 3,031.29 and 788.45

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Solution

The fourth proportional to 2,020.05, 3,031.29 and 788.45 is: 1,183.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,020.05 : 3,031.29 = 788.45 : x
  2. Step 2: Convert to fraction form
    2,020.05/3,031.29 = 788.45/x
  3. Step 3: Cross multiply
    2,020.05x = 3,031.29 × 788.45
  4. Step 4: Simplify right side
    2,020.05x = 2,390,005.44
  5. Step 5: Solve for x
    x = 2,390,005.44/2,020.05
  6. Step 6: Final answer
    x = 1,183.14

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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.