Home / 2,020.80-2,788.51-1,136.58

Finding the Fourth Proportional to 2,020.80, 2,788.51 and 1,136.58

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Solution

The fourth proportional to 2,020.80, 2,788.51 and 1,136.58 is: 1,568.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,020.80 : 2,788.51 = 1,136.58 : x
  2. Step 2: Convert to fraction form
    2,020.80/2,788.51 = 1,136.58/x
  3. Step 3: Cross multiply
    2,020.80x = 2,788.51 × 1,136.58
  4. Step 4: Simplify right side
    2,020.80x = 3,169,370.18
  5. Step 5: Solve for x
    x = 3,169,370.18/2,020.80
  6. Step 6: Final answer
    x = 1,568.37

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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.