Home / 2,212.63-3,320.99-1,117.76

Finding the Fourth Proportional to 2,212.63, 3,320.99 and 1,117.76

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Solution

The fourth proportional to 2,212.63, 3,320.99 and 1,117.76 is: 1,677.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.63 : 3,320.99 = 1,117.76 : x
  2. Step 2: Convert to fraction form
    2,212.63/3,320.99 = 1,117.76/x
  3. Step 3: Cross multiply
    2,212.63x = 3,320.99 × 1,117.76
  4. Step 4: Simplify right side
    2,212.63x = 3,712,076.75
  5. Step 5: Solve for x
    x = 3,712,076.75/2,212.63
  6. Step 6: Final answer
    x = 1,677.68

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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.