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Finding the Fourth Proportional to 9,190.53, 12,690.17 and 7,392.21

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Solution

The fourth proportional to 9,190.53, 12,690.17 and 7,392.21 is: 10,207.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,190.53 : 12,690.17 = 7,392.21 : x
  2. Step 2: Convert to fraction form
    9,190.53/12,690.17 = 7,392.21/x
  3. Step 3: Cross multiply
    9,190.53x = 12,690.17 × 7,392.21
  4. Step 4: Simplify right side
    9,190.53x = 93,808,416.13
  5. Step 5: Solve for x
    x = 93,808,416.13/9,190.53
  6. Step 6: Final answer
    x = 10,207.07

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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.