Home / 4,780.92-7,171.32-1,318.08

Finding the Fourth Proportional to 4,780.92, 7,171.32 and 1,318.08

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Solution

The fourth proportional to 4,780.92, 7,171.32 and 1,318.08 is: 1,977.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,780.92 : 7,171.32 = 1,318.08 : x
  2. Step 2: Convert to fraction form
    4,780.92/7,171.32 = 1,318.08/x
  3. Step 3: Cross multiply
    4,780.92x = 7,171.32 × 1,318.08
  4. Step 4: Simplify right side
    4,780.92x = 9,452,373.47
  5. Step 5: Solve for x
    x = 9,452,373.47/4,780.92
  6. Step 6: Final answer
    x = 1,977.10

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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.