Home / 3,618.78-4,994.90-2,127.18

Finding the Fourth Proportional to 3,618.78, 4,994.90 and 2,127.18

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Solution

The fourth proportional to 3,618.78, 4,994.90 and 2,127.18 is: 2,936.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.78 : 4,994.90 = 2,127.18 : x
  2. Step 2: Convert to fraction form
    3,618.78/4,994.90 = 2,127.18/x
  3. Step 3: Cross multiply
    3,618.78x = 4,994.90 × 2,127.18
  4. Step 4: Simplify right side
    3,618.78x = 10,625,040.75
  5. Step 5: Solve for x
    x = 10,625,040.75/3,618.78
  6. Step 6: Final answer
    x = 2,936.08

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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.