Home / 2,110.51-3,165.76-811.67

Finding the Fourth Proportional to 2,110.51, 3,165.76 and 811.67

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Solution

The fourth proportional to 2,110.51, 3,165.76 and 811.67 is: 1,217.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,110.51 : 3,165.76 = 811.67 : x
  2. Step 2: Convert to fraction form
    2,110.51/3,165.76 = 811.67/x
  3. Step 3: Cross multiply
    2,110.51x = 3,165.76 × 811.67
  4. Step 4: Simplify right side
    2,110.51x = 2,569,552.42
  5. Step 5: Solve for x
    x = 2,569,552.42/2,110.51
  6. Step 6: Final answer
    x = 1,217.50

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Double scale
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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.