Home / 2,020.24-2,787.78-1,135.87

Finding the Fourth Proportional to 2,020.24, 2,787.78 and 1,135.87

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Solution

The fourth proportional to 2,020.24, 2,787.78 and 1,135.87 is: 1,567.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,020.24 : 2,787.78 = 1,135.87 : x
  2. Step 2: Convert to fraction form
    2,020.24/2,787.78 = 1,135.87/x
  3. Step 3: Cross multiply
    2,020.24x = 2,787.78 × 1,135.87
  4. Step 4: Simplify right side
    2,020.24x = 3,166,555.67
  5. Step 5: Solve for x
    x = 3,166,555.67/2,020.24
  6. Step 6: Final answer
    x = 1,567.42

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Double scale
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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.