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Finding the Fourth Proportional to 5,160.86, 7,122.03 and 2,803.00

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Solution

The fourth proportional to 5,160.86, 7,122.03 and 2,803.00 is: 3,868.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.86 : 7,122.03 = 2,803.00 : x
  2. Step 2: Convert to fraction form
    5,160.86/7,122.03 = 2,803.00/x
  3. Step 3: Cross multiply
    5,160.86x = 7,122.03 × 2,803.00
  4. Step 4: Simplify right side
    5,160.86x = 19,963,074.12
  5. Step 5: Solve for x
    x = 19,963,074.12/5,160.86
  6. Step 6: Final answer
    x = 3,868.17

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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.