Home / 5,160.99-7,122.04-2,803.12

Finding the Fourth Proportional to 5,160.99, 7,122.04 and 2,803.12

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Solution

The fourth proportional to 5,160.99, 7,122.04 and 2,803.12 is: 3,868.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.99 : 7,122.04 = 2,803.12 : x
  2. Step 2: Convert to fraction form
    5,160.99/7,122.04 = 2,803.12/x
  3. Step 3: Cross multiply
    5,160.99x = 7,122.04 × 2,803.12
  4. Step 4: Simplify right side
    5,160.99x = 19,963,932.76
  5. Step 5: Solve for x
    x = 19,963,932.76/5,160.99
  6. Step 6: Final answer
    x = 3,868.24

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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.