Home / 1,605.96-2,217.32-1,215.12

Finding the Fourth Proportional to 1,605.96, 2,217.32 and 1,215.12

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Solution

The fourth proportional to 1,605.96, 2,217.32 and 1,215.12 is: 1,677.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,605.96 : 2,217.32 = 1,215.12 : x
  2. Step 2: Convert to fraction form
    1,605.96/2,217.32 = 1,215.12/x
  3. Step 3: Cross multiply
    1,605.96x = 2,217.32 × 1,215.12
  4. Step 4: Simplify right side
    1,605.96x = 2,694,309.88
  5. Step 5: Solve for x
    x = 2,694,309.88/1,605.96
  6. Step 6: Final answer
    x = 1,677.69

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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.