Home / 2,215.80-3,317.85-1,774.98

Finding the Fourth Proportional to 2,215.80, 3,317.85 and 1,774.98

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Solution

The fourth proportional to 2,215.80, 3,317.85 and 1,774.98 is: 2,657.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.80 : 3,317.85 = 1,774.98 : x
  2. Step 2: Convert to fraction form
    2,215.80/3,317.85 = 1,774.98/x
  3. Step 3: Cross multiply
    2,215.80x = 3,317.85 × 1,774.98
  4. Step 4: Simplify right side
    2,215.80x = 5,889,117.39
  5. Step 5: Solve for x
    x = 5,889,117.39/2,215.80
  6. Step 6: Final answer
    x = 2,657.78

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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.