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Finding the Fourth Proportional to 8,938.68, 13,405.14 and 3,094.20

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Solution

The fourth proportional to 8,938.68, 13,405.14 and 3,094.20 is: 4,640.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,938.68 : 13,405.14 = 3,094.20 : x
  2. Step 2: Convert to fraction form
    8,938.68/13,405.14 = 3,094.20/x
  3. Step 3: Cross multiply
    8,938.68x = 13,405.14 × 3,094.20
  4. Step 4: Simplify right side
    8,938.68x = 41,478,184.19
  5. Step 5: Solve for x
    x = 41,478,184.19/8,938.68
  6. Step 6: Final answer
    x = 4,640.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.