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Finding the Fourth Proportional to 6,983.94, 9,637.79 and 3,840.06

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Solution

The fourth proportional to 6,983.94, 9,637.79 and 3,840.06 is: 5,299.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,983.94 : 9,637.79 = 3,840.06 : x
  2. Step 2: Convert to fraction form
    6,983.94/9,637.79 = 3,840.06/x
  3. Step 3: Cross multiply
    6,983.94x = 9,637.79 × 3,840.06
  4. Step 4: Simplify right side
    6,983.94x = 37,009,672.67
  5. Step 5: Solve for x
    x = 37,009,672.67/6,983.94
  6. Step 6: Final answer
    x = 5,299.25

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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.