Home / 3,438.16-5,157.44-1,247.12

Finding the Fourth Proportional to 3,438.16, 5,157.44 and 1,247.12

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Solution

The fourth proportional to 3,438.16, 5,157.44 and 1,247.12 is: 1,870.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438.16 : 5,157.44 = 1,247.12 : x
  2. Step 2: Convert to fraction form
    3,438.16/5,157.44 = 1,247.12/x
  3. Step 3: Cross multiply
    3,438.16x = 5,157.44 × 1,247.12
  4. Step 4: Simplify right side
    3,438.16x = 6,431,946.57
  5. Step 5: Solve for x
    x = 6,431,946.57/3,438.16
  6. Step 6: Final answer
    x = 1,870.75

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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.