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Finding the Fourth Proportional to 8,718.86, 12,029.28 and 4,941.72

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Solution

The fourth proportional to 8,718.86, 12,029.28 and 4,941.72 is: 6,818.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,718.86 : 12,029.28 = 4,941.72 : x
  2. Step 2: Convert to fraction form
    8,718.86/12,029.28 = 4,941.72/x
  3. Step 3: Cross multiply
    8,718.86x = 12,029.28 × 4,941.72
  4. Step 4: Simplify right side
    8,718.86x = 59,445,333.56
  5. Step 5: Solve for x
    x = 59,445,333.56/8,718.86
  6. Step 6: Final answer
    x = 6,818.02

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.