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Finding the Fourth Proportional to 9,421.92, 12,995.07 and 6,903.12

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Solution

The fourth proportional to 9,421.92, 12,995.07 and 6,903.12 is: 9,521.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,421.92 : 12,995.07 = 6,903.12 : x
  2. Step 2: Convert to fraction form
    9,421.92/12,995.07 = 6,903.12/x
  3. Step 3: Cross multiply
    9,421.92x = 12,995.07 × 6,903.12
  4. Step 4: Simplify right side
    9,421.92x = 89,706,527.62
  5. Step 5: Solve for x
    x = 89,706,527.62/9,421.92
  6. Step 6: Final answer
    x = 9,521.05

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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.