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Finding the Fourth Proportional to 2,669.85, 4,005.33 and 914.99

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Solution

The fourth proportional to 2,669.85, 4,005.33 and 914.99 is: 1,372.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,669.85 : 4,005.33 = 914.99 : x
  2. Step 2: Convert to fraction form
    2,669.85/4,005.33 = 914.99/x
  3. Step 3: Cross multiply
    2,669.85x = 4,005.33 × 914.99
  4. Step 4: Simplify right side
    2,669.85x = 3,664,812.30
  5. Step 5: Solve for x
    x = 3,664,812.30/2,669.85
  6. Step 6: Final answer
    x = 1,372.67

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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.