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Finding the Fourth Proportional to 5,697.15, 7,858.18 and 4,949.79

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Solution

The fourth proportional to 5,697.15, 7,858.18 and 4,949.79 is: 6,827.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,697.15 : 7,858.18 = 4,949.79 : x
  2. Step 2: Convert to fraction form
    5,697.15/7,858.18 = 4,949.79/x
  3. Step 3: Cross multiply
    5,697.15x = 7,858.18 × 4,949.79
  4. Step 4: Simplify right side
    5,697.15x = 38,896,317.50
  5. Step 5: Solve for x
    x = 38,896,317.50/5,697.15
  6. Step 6: Final answer
    x = 6,827.33

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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.