Home / 2,217.24-3,060.18-1,285.80

Finding the Fourth Proportional to 2,217.24, 3,060.18 and 1,285.80

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Solution

The fourth proportional to 2,217.24, 3,060.18 and 1,285.80 is: 1,774.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.24 : 3,060.18 = 1,285.80 : x
  2. Step 2: Convert to fraction form
    2,217.24/3,060.18 = 1,285.80/x
  3. Step 3: Cross multiply
    2,217.24x = 3,060.18 × 1,285.80
  4. Step 4: Simplify right side
    2,217.24x = 3,934,779.44
  5. Step 5: Solve for x
    x = 3,934,779.44/2,217.24
  6. Step 6: Final answer
    x = 1,774.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.