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Finding the Fourth Proportional to 8,494.70, 11,721.43 and 4,717.90

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Solution

The fourth proportional to 8,494.70, 11,721.43 and 4,717.90 is: 6,510.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,494.70 : 11,721.43 = 4,717.90 : x
  2. Step 2: Convert to fraction form
    8,494.70/11,721.43 = 4,717.90/x
  3. Step 3: Cross multiply
    8,494.70x = 11,721.43 × 4,717.90
  4. Step 4: Simplify right side
    8,494.70x = 55,300,502.48
  5. Step 5: Solve for x
    x = 55,300,502.48/8,494.70
  6. Step 6: Final answer
    x = 6,510.00

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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.