Home / 1,505.43-2,258.75-811.67

Finding the Fourth Proportional to 1,505.43, 2,258.75 and 811.67

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Solution

The fourth proportional to 1,505.43, 2,258.75 and 811.67 is: 1,217.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,505.43 : 2,258.75 = 811.67 : x
  2. Step 2: Convert to fraction form
    1,505.43/2,258.75 = 811.67/x
  3. Step 3: Cross multiply
    1,505.43x = 2,258.75 × 811.67
  4. Step 4: Simplify right side
    1,505.43x = 1,833,350.35
  5. Step 5: Solve for x
    x = 1,833,350.35/1,505.43
  6. Step 6: Final answer
    x = 1,217.83

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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.