Home / 3,438.21-5,157.32-841.13

Finding the Fourth Proportional to 3,438.21, 5,157.32 and 841.13

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Solution

The fourth proportional to 3,438.21, 5,157.32 and 841.13 is: 1,261.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438.21 : 5,157.32 = 841.13 : x
  2. Step 2: Convert to fraction form
    3,438.21/5,157.32 = 841.13/x
  3. Step 3: Cross multiply
    3,438.21x = 5,157.32 × 841.13
  4. Step 4: Simplify right side
    3,438.21x = 4,337,946.58
  5. Step 5: Solve for x
    x = 4,337,946.58/3,438.21
  6. Step 6: Final answer
    x = 1,261.69

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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.