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Finding the Fourth Proportional to 2,020.40, 3,029.70 and 925.12

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Solution

The fourth proportional to 2,020.40, 3,029.70 and 925.12 is: 1,387.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,020.40 : 3,029.70 = 925.12 : x
  2. Step 2: Convert to fraction form
    2,020.40/3,029.70 = 925.12/x
  3. Step 3: Cross multiply
    2,020.40x = 3,029.70 × 925.12
  4. Step 4: Simplify right side
    2,020.40x = 2,802,836.06
  5. Step 5: Solve for x
    x = 2,802,836.06/2,020.40
  6. Step 6: Final answer
    x = 1,387.27

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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.