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Finding the Fourth Proportional to 9,382, 12,946.04 and 5,189.68

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Solution

The fourth proportional to 9,382, 12,946.04 and 5,189.68 is: 7,161.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,382 : 12,946.04 = 5,189.68 : x
  2. Step 2: Convert to fraction form
    9,382/12,946.04 = 5,189.68/x
  3. Step 3: Cross multiply
    9,382x = 12,946.04 × 5,189.68
  4. Step 4: Simplify right side
    9,382x = 67,185,804.87
  5. Step 5: Solve for x
    x = 67,185,804.87/9,382
  6. Step 6: Final answer
    x = 7,161.14

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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.