Home / 7,005.48-9,664.40-4,020.72

Finding the Fourth Proportional to 7,005.48, 9,664.40 and 4,020.72

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Solution

The fourth proportional to 7,005.48, 9,664.40 and 4,020.72 is: 5,546.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,005.48 : 9,664.40 = 4,020.72 : x
  2. Step 2: Convert to fraction form
    7,005.48/9,664.40 = 4,020.72/x
  3. Step 3: Cross multiply
    7,005.48x = 9,664.40 × 4,020.72
  4. Step 4: Simplify right side
    7,005.48x = 38,857,846.37
  5. Step 5: Solve for x
    x = 38,857,846.37/7,005.48
  6. Step 6: Final answer
    x = 5,546.78

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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.