Home / 8,930.78-13,381.40-3,084.14

Finding the Fourth Proportional to 8,930.78, 13,381.40 and 3,084.14

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Solution

The fourth proportional to 8,930.78, 13,381.40 and 3,084.14 is: 4,621.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,930.78 : 13,381.40 = 3,084.14 : x
  2. Step 2: Convert to fraction form
    8,930.78/13,381.40 = 3,084.14/x
  3. Step 3: Cross multiply
    8,930.78x = 13,381.40 × 3,084.14
  4. Step 4: Simplify right side
    8,930.78x = 41,270,111.00
  5. Step 5: Solve for x
    x = 41,270,111.00/8,930.78
  6. Step 6: Final answer
    x = 4,621.11

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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.