Home / 3,438.42-5,157.63-1,247.15

Finding the Fourth Proportional to 3,438.42, 5,157.63 and 1,247.15

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Solution

The fourth proportional to 3,438.42, 5,157.63 and 1,247.15 is: 1,870.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438.42 : 5,157.63 = 1,247.15 : x
  2. Step 2: Convert to fraction form
    3,438.42/5,157.63 = 1,247.15/x
  3. Step 3: Cross multiply
    3,438.42x = 5,157.63 × 1,247.15
  4. Step 4: Simplify right side
    3,438.42x = 6,432,312.47
  5. Step 5: Solve for x
    x = 6,432,312.47/3,438.42
  6. Step 6: Final answer
    x = 1,870.72

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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.