Home / 4,780.10-7,172.76-1,858.52

Finding the Fourth Proportional to 4,780.10, 7,172.76 and 1,858.52

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Solution

The fourth proportional to 4,780.10, 7,172.76 and 1,858.52 is: 2,788.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,780.10 : 7,172.76 = 1,858.52 : x
  2. Step 2: Convert to fraction form
    4,780.10/7,172.76 = 1,858.52/x
  3. Step 3: Cross multiply
    4,780.10x = 7,172.76 × 1,858.52
  4. Step 4: Simplify right side
    4,780.10x = 13,330,717.92
  5. Step 5: Solve for x
    x = 13,330,717.92/4,780.10
  6. Step 6: Final answer
    x = 2,788.79

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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.