Home / 3,878.49-5,349.45-2,618.94

Finding the Fourth Proportional to 3,878.49, 5,349.45 and 2,618.94

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Solution

The fourth proportional to 3,878.49, 5,349.45 and 2,618.94 is: 3,612.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.49 : 5,349.45 = 2,618.94 : x
  2. Step 2: Convert to fraction form
    3,878.49/5,349.45 = 2,618.94/x
  3. Step 3: Cross multiply
    3,878.49x = 5,349.45 × 2,618.94
  4. Step 4: Simplify right side
    3,878.49x = 14,009,888.58
  5. Step 5: Solve for x
    x = 14,009,888.58/3,878.49
  6. Step 6: Final answer
    x = 3,612.20

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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.