Home / 2,617.32-3,611.76-1,438.20

Finding the Fourth Proportional to 2,617.32, 3,611.76 and 1,438.20

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Solution

The fourth proportional to 2,617.32, 3,611.76 and 1,438.20 is: 1,984.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,617.32 : 3,611.76 = 1,438.20 : x
  2. Step 2: Convert to fraction form
    2,617.32/3,611.76 = 1,438.20/x
  3. Step 3: Cross multiply
    2,617.32x = 3,611.76 × 1,438.20
  4. Step 4: Simplify right side
    2,617.32x = 5,194,433.23
  5. Step 5: Solve for x
    x = 5,194,433.23/2,617.32
  6. Step 6: Final answer
    x = 1,984.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.