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Finding the Fourth Proportional to 2,772.63, 4,158.95 and 923.67

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Solution

The fourth proportional to 2,772.63, 4,158.95 and 923.67 is: 1,385.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,772.63 : 4,158.95 = 923.67 : x
  2. Step 2: Convert to fraction form
    2,772.63/4,158.95 = 923.67/x
  3. Step 3: Cross multiply
    2,772.63x = 4,158.95 × 923.67
  4. Step 4: Simplify right side
    2,772.63x = 3,841,492.73
  5. Step 5: Solve for x
    x = 3,841,492.73/2,772.63
  6. Step 6: Final answer
    x = 1,385.51

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Similar ratio
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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.