Home / 9,210.79-12,710.97-5,231.98

Finding the Fourth Proportional to 9,210.79, 12,710.97 and 5,231.98

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Solution

The fourth proportional to 9,210.79, 12,710.97 and 5,231.98 is: 7,220.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,210.79 : 12,710.97 = 5,231.98 : x
  2. Step 2: Convert to fraction form
    9,210.79/12,710.97 = 5,231.98/x
  3. Step 3: Cross multiply
    9,210.79x = 12,710.97 × 5,231.98
  4. Step 4: Simplify right side
    9,210.79x = 66,503,540.82
  5. Step 5: Solve for x
    x = 66,503,540.82/9,210.79
  6. Step 6: Final answer
    x = 7,220.18

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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.