Home / 5,160.87-7,121.99-2,803.01

Finding the Fourth Proportional to 5,160.87, 7,121.99 and 2,803.01

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Solution

The fourth proportional to 5,160.87, 7,121.99 and 2,803.01 is: 3,868.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.87 : 7,121.99 = 2,803.01 : x
  2. Step 2: Convert to fraction form
    5,160.87/7,121.99 = 2,803.01/x
  3. Step 3: Cross multiply
    5,160.87x = 7,121.99 × 2,803.01
  4. Step 4: Simplify right side
    5,160.87x = 19,962,980.59
  5. Step 5: Solve for x
    x = 19,962,980.59/5,160.87
  6. Step 6: Final answer
    x = 3,868.14

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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.