Home / 4,278.58-5,902.71-2,787.76

Finding the Fourth Proportional to 4,278.58, 5,902.71 and 2,787.76

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Solution

The fourth proportional to 4,278.58, 5,902.71 and 2,787.76 is: 3,845.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,278.58 : 5,902.71 = 2,787.76 : x
  2. Step 2: Convert to fraction form
    4,278.58/5,902.71 = 2,787.76/x
  3. Step 3: Cross multiply
    4,278.58x = 5,902.71 × 2,787.76
  4. Step 4: Simplify right side
    4,278.58x = 16,455,338.83
  5. Step 5: Solve for x
    x = 16,455,338.83/4,278.58
  6. Step 6: Final answer
    x = 3,845.98

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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.