Home / 3,438.30-5,157.47-841.25

Finding the Fourth Proportional to 3,438.30, 5,157.47 and 841.25

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Solution

The fourth proportional to 3,438.30, 5,157.47 and 841.25 is: 1,261.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438.30 : 5,157.47 = 841.25 : x
  2. Step 2: Convert to fraction form
    3,438.30/5,157.47 = 841.25/x
  3. Step 3: Cross multiply
    3,438.30x = 5,157.47 × 841.25
  4. Step 4: Simplify right side
    3,438.30x = 4,338,691.64
  5. Step 5: Solve for x
    x = 4,338,691.64/3,438.30
  6. Step 6: Final answer
    x = 1,261.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.