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Finding the Fourth Proportional to 5,151.56, 7,107.91 and 2,913.12

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Solution

The fourth proportional to 5,151.56, 7,107.91 and 2,913.12 is: 4,019.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,151.56 : 7,107.91 = 2,913.12 : x
  2. Step 2: Convert to fraction form
    5,151.56/7,107.91 = 2,913.12/x
  3. Step 3: Cross multiply
    5,151.56x = 7,107.91 × 2,913.12
  4. Step 4: Simplify right side
    5,151.56x = 20,706,187.50
  5. Step 5: Solve for x
    x = 20,706,187.50/5,151.56
  6. Step 6: Final answer
    x = 4,019.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.