Home / 5,109.87-7,053.15-2,985.99

Finding the Fourth Proportional to 5,109.87, 7,053.15 and 2,985.99

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Solution

The fourth proportional to 5,109.87, 7,053.15 and 2,985.99 is: 4,121.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,109.87 : 7,053.15 = 2,985.99 : x
  2. Step 2: Convert to fraction form
    5,109.87/7,053.15 = 2,985.99/x
  3. Step 3: Cross multiply
    5,109.87x = 7,053.15 × 2,985.99
  4. Step 4: Simplify right side
    5,109.87x = 21,060,635.37
  5. Step 5: Solve for x
    x = 21,060,635.37/5,109.87
  6. Step 6: Final answer
    x = 4,121.56

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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.