Home / 2,021.90-3,032.85-723.20

Finding the Fourth Proportional to 2,021.90, 3,032.85 and 723.20

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Solution

The fourth proportional to 2,021.90, 3,032.85 and 723.20 is: 1,084.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.90 : 3,032.85 = 723.20 : x
  2. Step 2: Convert to fraction form
    2,021.90/3,032.85 = 723.20/x
  3. Step 3: Cross multiply
    2,021.90x = 3,032.85 × 723.20
  4. Step 4: Simplify right side
    2,021.90x = 2,193,357.12
  5. Step 5: Solve for x
    x = 2,193,357.12/2,021.90
  6. Step 6: Final answer
    x = 1,084.80

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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.