Home / 5,127.40-7,690.56-2,205.28

Finding the Fourth Proportional to 5,127.40, 7,690.56 and 2,205.28

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Solution

The fourth proportional to 5,127.40, 7,690.56 and 2,205.28 is: 3,307.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,127.40 : 7,690.56 = 2,205.28 : x
  2. Step 2: Convert to fraction form
    5,127.40/7,690.56 = 2,205.28/x
  3. Step 3: Cross multiply
    5,127.40x = 7,690.56 × 2,205.28
  4. Step 4: Simplify right side
    5,127.40x = 16,959,838.16
  5. Step 5: Solve for x
    x = 16,959,838.16/5,127.40
  6. Step 6: Final answer
    x = 3,307.69

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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.