Home / 7,749.24-11,638.80-6,641.16

Finding the Fourth Proportional to 7,749.24, 11,638.80 and 6,641.16

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Solution

The fourth proportional to 7,749.24, 11,638.80 and 6,641.16 is: 9,974.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,749.24 : 11,638.80 = 6,641.16 : x
  2. Step 2: Convert to fraction form
    7,749.24/11,638.80 = 6,641.16/x
  3. Step 3: Cross multiply
    7,749.24x = 11,638.80 × 6,641.16
  4. Step 4: Simplify right side
    7,749.24x = 77,295,133.01
  5. Step 5: Solve for x
    x = 77,295,133.01/7,749.24
  6. Step 6: Final answer
    x = 9,974.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.