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Finding the Fourth Proportional to 6,983.31, 9,637.56 and 3,840.11

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Solution

The fourth proportional to 6,983.31, 9,637.56 and 3,840.11 is: 5,299.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,983.31 : 9,637.56 = 3,840.11 : x
  2. Step 2: Convert to fraction form
    6,983.31/9,637.56 = 3,840.11/x
  3. Step 3: Cross multiply
    6,983.31x = 9,637.56 × 3,840.11
  4. Step 4: Simplify right side
    6,983.31x = 37,009,242.34
  5. Step 5: Solve for x
    x = 37,009,242.34/6,983.31
  6. Step 6: Final answer
    x = 5,299.67

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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.