Home / 9,190.16-12,679.56-5,210.96

Finding the Fourth Proportional to 9,190.16, 12,679.56 and 5,210.96

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Solution

The fourth proportional to 9,190.16, 12,679.56 and 5,210.96 is: 7,189.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,190.16 : 12,679.56 = 5,210.96 : x
  2. Step 2: Convert to fraction form
    9,190.16/12,679.56 = 5,210.96/x
  3. Step 3: Cross multiply
    9,190.16x = 12,679.56 × 5,210.96
  4. Step 4: Simplify right side
    9,190.16x = 66,072,679.98
  5. Step 5: Solve for x
    x = 66,072,679.98/9,190.16
  6. Step 6: Final answer
    x = 7,189.50

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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.