Home / 5,186.18-7,156.64-2,947.74

Finding the Fourth Proportional to 5,186.18, 7,156.64 and 2,947.74

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Solution

The fourth proportional to 5,186.18, 7,156.64 and 2,947.74 is: 4,067.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,186.18 : 7,156.64 = 2,947.74 : x
  2. Step 2: Convert to fraction form
    5,186.18/7,156.64 = 2,947.74/x
  3. Step 3: Cross multiply
    5,186.18x = 7,156.64 × 2,947.74
  4. Step 4: Simplify right side
    5,186.18x = 21,095,899.25
  5. Step 5: Solve for x
    x = 21,095,899.25/5,186.18
  6. Step 6: Final answer
    x = 4,067.72

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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.