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Finding the Fourth Proportional to 5,163, 7,124.76 and 2,805.09

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Solution

The fourth proportional to 5,163, 7,124.76 and 2,805.09 is: 3,870.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,163 : 7,124.76 = 2,805.09 : x
  2. Step 2: Convert to fraction form
    5,163/7,124.76 = 2,805.09/x
  3. Step 3: Cross multiply
    5,163x = 7,124.76 × 2,805.09
  4. Step 4: Simplify right side
    5,163x = 19,985,593.03
  5. Step 5: Solve for x
    x = 19,985,593.03/5,163
  6. Step 6: Final answer
    x = 3,870.93

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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.