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Finding the Fourth Proportional to 8,454.56, 11,670.17 and 4,920.74

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Solution

The fourth proportional to 8,454.56, 11,670.17 and 4,920.74 is: 6,792.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,454.56 : 11,670.17 = 4,920.74 : x
  2. Step 2: Convert to fraction form
    8,454.56/11,670.17 = 4,920.74/x
  3. Step 3: Cross multiply
    8,454.56x = 11,670.17 × 4,920.74
  4. Step 4: Simplify right side
    8,454.56x = 57,425,789.37
  5. Step 5: Solve for x
    x = 57,425,789.37/8,454.56
  6. Step 6: Final answer
    x = 6,792.29

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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.