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Finding the Fourth Proportional to 5,156.84, 7,735.68 and 1,647.32

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Solution

The fourth proportional to 5,156.84, 7,735.68 and 1,647.32 is: 2,471.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,156.84 : 7,735.68 = 1,647.32 : x
  2. Step 2: Convert to fraction form
    5,156.84/7,735.68 = 1,647.32/x
  3. Step 3: Cross multiply
    5,156.84x = 7,735.68 × 1,647.32
  4. Step 4: Simplify right side
    5,156.84x = 12,743,140.38
  5. Step 5: Solve for x
    x = 12,743,140.38/5,156.84
  6. Step 6: Final answer
    x = 2,471.11

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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.