Home / 9,190.26-12,681.90-5,211.81

Finding the Fourth Proportional to 9,190.26, 12,681.90 and 5,211.81

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Solution

The fourth proportional to 9,190.26, 12,681.90 and 5,211.81 is: 7,191.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,190.26 : 12,681.90 = 5,211.81 : x
  2. Step 2: Convert to fraction form
    9,190.26/12,681.90 = 5,211.81/x
  3. Step 3: Cross multiply
    9,190.26x = 12,681.90 × 5,211.81
  4. Step 4: Simplify right side
    9,190.26x = 66,095,653.24
  5. Step 5: Solve for x
    x = 66,095,653.24/9,190.26
  6. Step 6: Final answer
    x = 7,191.92

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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.