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Finding the Fourth Proportional to 5,297.40, 7,309.86 and 2,939.48

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Solution

The fourth proportional to 5,297.40, 7,309.86 and 2,939.48 is: 4,056.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,297.40 : 7,309.86 = 2,939.48 : x
  2. Step 2: Convert to fraction form
    5,297.40/7,309.86 = 2,939.48/x
  3. Step 3: Cross multiply
    5,297.40x = 7,309.86 × 2,939.48
  4. Step 4: Simplify right side
    5,297.40x = 21,487,187.27
  5. Step 5: Solve for x
    x = 21,487,187.27/5,297.40
  6. Step 6: Final answer
    x = 4,056.18

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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.