Home / 9,197.87-12,690.86-5,221.17

Finding the Fourth Proportional to 9,197.87, 12,690.86 and 5,221.17

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Solution

The fourth proportional to 9,197.87, 12,690.86 and 5,221.17 is: 7,203.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,197.87 : 12,690.86 = 5,221.17 : x
  2. Step 2: Convert to fraction form
    9,197.87/12,690.86 = 5,221.17/x
  3. Step 3: Cross multiply
    9,197.87x = 12,690.86 × 5,221.17
  4. Step 4: Simplify right side
    9,197.87x = 66,261,111.40
  5. Step 5: Solve for x
    x = 66,261,111.40/9,197.87
  6. Step 6: Final answer
    x = 7,203.97

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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.