Home / 5,186.19-7,156.98-2,828.55

Finding the Fourth Proportional to 5,186.19, 7,156.98 and 2,828.55

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Solution

The fourth proportional to 5,186.19, 7,156.98 and 2,828.55 is: 3,903.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,186.19 : 7,156.98 = 2,828.55 : x
  2. Step 2: Convert to fraction form
    5,186.19/7,156.98 = 2,828.55/x
  3. Step 3: Cross multiply
    5,186.19x = 7,156.98 × 2,828.55
  4. Step 4: Simplify right side
    5,186.19x = 20,243,875.78
  5. Step 5: Solve for x
    x = 20,243,875.78/5,186.19
  6. Step 6: Final answer
    x = 3,903.42

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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.