Home / 2,215.33-3,056.47-1,318.66

Finding the Fourth Proportional to 2,215.33, 3,056.47 and 1,318.66

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Solution

The fourth proportional to 2,215.33, 3,056.47 and 1,318.66 is: 1,819.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.33 : 3,056.47 = 1,318.66 : x
  2. Step 2: Convert to fraction form
    2,215.33/3,056.47 = 1,318.66/x
  3. Step 3: Cross multiply
    2,215.33x = 3,056.47 × 1,318.66
  4. Step 4: Simplify right side
    2,215.33x = 4,030,433.79
  5. Step 5: Solve for x
    x = 4,030,433.79/2,215.33
  6. Step 6: Final answer
    x = 1,819.34

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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.