Home / 4,877.76-7,317.12-2,105.28

Finding the Fourth Proportional to 4,877.76, 7,317.12 and 2,105.28

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Solution

The fourth proportional to 4,877.76, 7,317.12 and 2,105.28 is: 3,158.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,877.76 : 7,317.12 = 2,105.28 : x
  2. Step 2: Convert to fraction form
    4,877.76/7,317.12 = 2,105.28/x
  3. Step 3: Cross multiply
    4,877.76x = 7,317.12 × 2,105.28
  4. Step 4: Simplify right side
    4,877.76x = 15,404,586.39
  5. Step 5: Solve for x
    x = 15,404,586.39/4,877.76
  6. Step 6: Final answer
    x = 3,158.13

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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.