Home / 3,938.54-5,429.88-3,376.58

Finding the Fourth Proportional to 3,938.54, 5,429.88 and 3,376.58

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Solution

The fourth proportional to 3,938.54, 5,429.88 and 3,376.58 is: 4,655.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,938.54 : 5,429.88 = 3,376.58 : x
  2. Step 2: Convert to fraction form
    3,938.54/5,429.88 = 3,376.58/x
  3. Step 3: Cross multiply
    3,938.54x = 5,429.88 × 3,376.58
  4. Step 4: Simplify right side
    3,938.54x = 18,334,424.21
  5. Step 5: Solve for x
    x = 18,334,424.21/3,938.54
  6. Step 6: Final answer
    x = 4,655.13

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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.