Home / 5,215.85-7,823.79-1,518.09

Finding the Fourth Proportional to 5,215.85, 7,823.79 and 1,518.09

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Solution

The fourth proportional to 5,215.85, 7,823.79 and 1,518.09 is: 2,277.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,215.85 : 7,823.79 = 1,518.09 : x
  2. Step 2: Convert to fraction form
    5,215.85/7,823.79 = 1,518.09/x
  3. Step 3: Cross multiply
    5,215.85x = 7,823.79 × 1,518.09
  4. Step 4: Simplify right side
    5,215.85x = 11,877,217.36
  5. Step 5: Solve for x
    x = 11,877,217.36/5,215.85
  6. Step 6: Final answer
    x = 2,277.14

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1.5x scale

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.