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Finding the Fourth Proportional to 4,699.93, 6,471.13 and 3,990.37

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Solution

The fourth proportional to 4,699.93, 6,471.13 and 3,990.37 is: 5,494.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,699.93 : 6,471.13 = 3,990.37 : x
  2. Step 2: Convert to fraction form
    4,699.93/6,471.13 = 3,990.37/x
  3. Step 3: Cross multiply
    4,699.93x = 6,471.13 × 3,990.37
  4. Step 4: Simplify right side
    4,699.93x = 25,822,203.02
  5. Step 5: Solve for x
    x = 25,822,203.02/4,699.93
  6. Step 6: Final answer
    x = 5,494.17

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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.