Home / 4,918.95-6,787.98-2,680.78

Finding the Fourth Proportional to 4,918.95, 6,787.98 and 2,680.78

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Solution

The fourth proportional to 4,918.95, 6,787.98 and 2,680.78 is: 3,699.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,918.95 : 6,787.98 = 2,680.78 : x
  2. Step 2: Convert to fraction form
    4,918.95/6,787.98 = 2,680.78/x
  3. Step 3: Cross multiply
    4,918.95x = 6,787.98 × 2,680.78
  4. Step 4: Simplify right side
    4,918.95x = 18,197,069.24
  5. Step 5: Solve for x
    x = 18,197,069.24/4,918.95
  6. Step 6: Final answer
    x = 3,699.38

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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.