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Finding the Fourth Proportional to 8,720.64, 12,035.31 and 4,943.98

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Solution

The fourth proportional to 8,720.64, 12,035.31 and 4,943.98 is: 6,823.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.64 : 12,035.31 = 4,943.98 : x
  2. Step 2: Convert to fraction form
    8,720.64/12,035.31 = 4,943.98/x
  3. Step 3: Cross multiply
    8,720.64x = 12,035.31 × 4,943.98
  4. Step 4: Simplify right side
    8,720.64x = 59,502,331.93
  5. Step 5: Solve for x
    x = 59,502,331.93/8,720.64
  6. Step 6: Final answer
    x = 6,823.16

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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.