Home / 5,125.16-7,690.25-1,838.51

Finding the Fourth Proportional to 5,125.16, 7,690.25 and 1,838.51

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Solution

The fourth proportional to 5,125.16, 7,690.25 and 1,838.51 is: 2,758.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.16 : 7,690.25 = 1,838.51 : x
  2. Step 2: Convert to fraction form
    5,125.16/7,690.25 = 1,838.51/x
  3. Step 3: Cross multiply
    5,125.16x = 7,690.25 × 1,838.51
  4. Step 4: Simplify right side
    5,125.16x = 14,138,553.88
  5. Step 5: Solve for x
    x = 14,138,553.88/5,125.16
  6. Step 6: Final answer
    x = 2,758.66

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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.