Home / 2,052.90-2,833.68-1,391.55

Finding the Fourth Proportional to 2,052.90, 2,833.68 and 1,391.55

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Solution

The fourth proportional to 2,052.90, 2,833.68 and 1,391.55 is: 1,920.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,052.90 : 2,833.68 = 1,391.55 : x
  2. Step 2: Convert to fraction form
    2,052.90/2,833.68 = 1,391.55/x
  3. Step 3: Cross multiply
    2,052.90x = 2,833.68 × 1,391.55
  4. Step 4: Simplify right side
    2,052.90x = 3,943,207.40
  5. Step 5: Solve for x
    x = 3,943,207.40/2,052.90
  6. Step 6: Final answer
    x = 1,920.80

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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.