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Finding the Fourth Proportional to 5,728.53, 7,910.19 and 4,309.76

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Solution

The fourth proportional to 5,728.53, 7,910.19 and 4,309.76 is: 5,951.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,728.53 : 7,910.19 = 4,309.76 : x
  2. Step 2: Convert to fraction form
    5,728.53/7,910.19 = 4,309.76/x
  3. Step 3: Cross multiply
    5,728.53x = 7,910.19 × 4,309.76
  4. Step 4: Simplify right side
    5,728.53x = 34,090,995.74
  5. Step 5: Solve for x
    x = 34,090,995.74/5,728.53
  6. Step 6: Final answer
    x = 5,951.09

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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.