Home / 2,019.64-2,787.09-1,135.45

Finding the Fourth Proportional to 2,019.64, 2,787.09 and 1,135.45

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Solution

The fourth proportional to 2,019.64, 2,787.09 and 1,135.45 is: 1,566.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,019.64 : 2,787.09 = 1,135.45 : x
  2. Step 2: Convert to fraction form
    2,019.64/2,787.09 = 1,135.45/x
  3. Step 3: Cross multiply
    2,019.64x = 2,787.09 × 1,135.45
  4. Step 4: Simplify right side
    2,019.64x = 3,164,588.70
  5. Step 5: Solve for x
    x = 3,164,588.70/2,019.64
  6. Step 6: Final answer
    x = 1,566.91

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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.