Home / 8,982.72-12,402.48-6,749.76

Finding the Fourth Proportional to 8,982.72, 12,402.48 and 6,749.76

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Solution

The fourth proportional to 8,982.72, 12,402.48 and 6,749.76 is: 9,319.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,982.72 : 12,402.48 = 6,749.76 : x
  2. Step 2: Convert to fraction form
    8,982.72/12,402.48 = 6,749.76/x
  3. Step 3: Cross multiply
    8,982.72x = 12,402.48 × 6,749.76
  4. Step 4: Simplify right side
    8,982.72x = 83,713,763.40
  5. Step 5: Solve for x
    x = 83,713,763.40/8,982.72
  6. Step 6: Final answer
    x = 9,319.42

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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.