Home / 2,787.51-3,845.70-1,608.15

Finding the Fourth Proportional to 2,787.51, 3,845.70 and 1,608.15

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Solution

The fourth proportional to 2,787.51, 3,845.70 and 1,608.15 is: 2,218.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.51 : 3,845.70 = 1,608.15 : x
  2. Step 2: Convert to fraction form
    2,787.51/3,845.70 = 1,608.15/x
  3. Step 3: Cross multiply
    2,787.51x = 3,845.70 × 1,608.15
  4. Step 4: Simplify right side
    2,787.51x = 6,184,462.46
  5. Step 5: Solve for x
    x = 6,184,462.46/2,787.51
  6. Step 6: Final answer
    x = 2,218.63

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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.