Home / 4,781.75-7,170.80-1,859.67

Finding the Fourth Proportional to 4,781.75, 7,170.80 and 1,859.67

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Solution

The fourth proportional to 4,781.75, 7,170.80 and 1,859.67 is: 2,788.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,781.75 : 7,170.80 = 1,859.67 : x
  2. Step 2: Convert to fraction form
    4,781.75/7,170.80 = 1,859.67/x
  3. Step 3: Cross multiply
    4,781.75x = 7,170.80 × 1,859.67
  4. Step 4: Simplify right side
    4,781.75x = 13,335,312.34
  5. Step 5: Solve for x
    x = 13,335,312.34/4,781.75
  6. Step 6: Final answer
    x = 2,788.80

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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.