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Finding the Fourth Proportional to 9,187.69, 12,679.14 and 4,995.94

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Solution

The fourth proportional to 9,187.69, 12,679.14 and 4,995.94 is: 6,894.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,187.69 : 12,679.14 = 4,995.94 : x
  2. Step 2: Convert to fraction form
    9,187.69/12,679.14 = 4,995.94/x
  3. Step 3: Cross multiply
    9,187.69x = 12,679.14 × 4,995.94
  4. Step 4: Simplify right side
    9,187.69x = 63,344,222.69
  5. Step 5: Solve for x
    x = 63,344,222.69/9,187.69
  6. Step 6: Final answer
    x = 6,894.47

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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.