Home / 1,438.50-2,157.12-616.44

Finding the Fourth Proportional to 1,438.50, 2,157.12 and 616.44

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Solution

The fourth proportional to 1,438.50, 2,157.12 and 616.44 is: 924.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438.50 : 2,157.12 = 616.44 : x
  2. Step 2: Convert to fraction form
    1,438.50/2,157.12 = 616.44/x
  3. Step 3: Cross multiply
    1,438.50x = 2,157.12 × 616.44
  4. Step 4: Simplify right side
    1,438.50x = 1,329,735.05
  5. Step 5: Solve for x
    x = 1,329,735.05/1,438.50
  6. Step 6: Final answer
    x = 924.39

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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.