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Finding the Fourth Proportional to 7,167.08, 9,889.62 and 3,980.34

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Solution

The fourth proportional to 7,167.08, 9,889.62 and 3,980.34 is: 5,492.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,167.08 : 9,889.62 = 3,980.34 : x
  2. Step 2: Convert to fraction form
    7,167.08/9,889.62 = 3,980.34/x
  3. Step 3: Cross multiply
    7,167.08x = 9,889.62 × 3,980.34
  4. Step 4: Simplify right side
    7,167.08x = 39,364,050.07
  5. Step 5: Solve for x
    x = 39,364,050.07/7,167.08
  6. Step 6: Final answer
    x = 5,492.34

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Half scale
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Double scale
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Similar ratio
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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.