Home / 2,019.95-2,787.53-1,135.75

Finding the Fourth Proportional to 2,019.95, 2,787.53 and 1,135.75

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Solution

The fourth proportional to 2,019.95, 2,787.53 and 1,135.75 is: 1,567.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,019.95 : 2,787.53 = 1,135.75 : x
  2. Step 2: Convert to fraction form
    2,019.95/2,787.53 = 1,135.75/x
  3. Step 3: Cross multiply
    2,019.95x = 2,787.53 × 1,135.75
  4. Step 4: Simplify right side
    2,019.95x = 3,165,947.01
  5. Step 5: Solve for x
    x = 3,165,947.01/2,019.95
  6. Step 6: Final answer
    x = 1,567.34

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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.