Home / 5,186.07-7,156.71-2,828.21

Finding the Fourth Proportional to 5,186.07, 7,156.71 and 2,828.21

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Solution

The fourth proportional to 5,186.07, 7,156.71 and 2,828.21 is: 3,902.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,186.07 : 7,156.71 = 2,828.21 : x
  2. Step 2: Convert to fraction form
    5,186.07/7,156.71 = 2,828.21/x
  3. Step 3: Cross multiply
    5,186.07x = 7,156.71 × 2,828.21
  4. Step 4: Simplify right side
    5,186.07x = 20,240,643.01
  5. Step 5: Solve for x
    x = 20,240,643.01/5,186.07
  6. Step 6: Final answer
    x = 3,902.89

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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.