Home / 7,064.96-9,749.80-3,921.36

Finding the Fourth Proportional to 7,064.96, 9,749.80 and 3,921.36

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Solution

The fourth proportional to 7,064.96, 9,749.80 and 3,921.36 is: 5,411.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,064.96 : 9,749.80 = 3,921.36 : x
  2. Step 2: Convert to fraction form
    7,064.96/9,749.80 = 3,921.36/x
  3. Step 3: Cross multiply
    7,064.96x = 9,749.80 × 3,921.36
  4. Step 4: Simplify right side
    7,064.96x = 38,232,475.73
  5. Step 5: Solve for x
    x = 38,232,475.73/7,064.96
  6. Step 6: Final answer
    x = 5,411.56

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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.