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Finding the Fourth Proportional to 9,918.08, 13,685.94 and 5,939.10

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Solution

The fourth proportional to 9,918.08, 13,685.94 and 5,939.10 is: 8,195.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,918.08 : 13,685.94 = 5,939.10 : x
  2. Step 2: Convert to fraction form
    9,918.08/13,685.94 = 5,939.10/x
  3. Step 3: Cross multiply
    9,918.08x = 13,685.94 × 5,939.10
  4. Step 4: Simplify right side
    9,918.08x = 81,282,166.25
  5. Step 5: Solve for x
    x = 81,282,166.25/9,918.08
  6. Step 6: Final answer
    x = 8,195.35

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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.