Home / 5,186.16-7,156.98-2,947.68

Finding the Fourth Proportional to 5,186.16, 7,156.98 and 2,947.68

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Solution

The fourth proportional to 5,186.16, 7,156.98 and 2,947.68 is: 4,067.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,186.16 : 7,156.98 = 2,947.68 : x
  2. Step 2: Convert to fraction form
    5,186.16/7,156.98 = 2,947.68/x
  3. Step 3: Cross multiply
    5,186.16x = 7,156.98 × 2,947.68
  4. Step 4: Simplify right side
    5,186.16x = 21,096,486.81
  5. Step 5: Solve for x
    x = 21,096,486.81/5,186.16
  6. Step 6: Final answer
    x = 4,067.84

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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.