Home / 5,438.15-8,157.26-1,489.32

Finding the Fourth Proportional to 5,438.15, 8,157.26 and 1,489.32

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Solution

The fourth proportional to 5,438.15, 8,157.26 and 1,489.32 is: 2,233.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,438.15 : 8,157.26 = 1,489.32 : x
  2. Step 2: Convert to fraction form
    5,438.15/8,157.26 = 1,489.32/x
  3. Step 3: Cross multiply
    5,438.15x = 8,157.26 × 1,489.32
  4. Step 4: Simplify right side
    5,438.15x = 12,148,763.02
  5. Step 5: Solve for x
    x = 12,148,763.02/5,438.15
  6. Step 6: Final answer
    x = 2,233.99

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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.