Home / 2,019.68-2,787.20-1,135.58

Finding the Fourth Proportional to 2,019.68, 2,787.20 and 1,135.58

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Solution

The fourth proportional to 2,019.68, 2,787.20 and 1,135.58 is: 1,567.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,019.68 : 2,787.20 = 1,135.58 : x
  2. Step 2: Convert to fraction form
    2,019.68/2,787.20 = 1,135.58/x
  3. Step 3: Cross multiply
    2,019.68x = 2,787.20 × 1,135.58
  4. Step 4: Simplify right side
    2,019.68x = 3,165,088.58
  5. Step 5: Solve for x
    x = 3,165,088.58/2,019.68
  6. Step 6: Final answer
    x = 1,567.12

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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.