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Finding the Fourth Proportional to 8,707.01, 12,015.64 and 4,929.80

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Solution

The fourth proportional to 8,707.01, 12,015.64 and 4,929.80 is: 6,803.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,707.01 : 12,015.64 = 4,929.80 : x
  2. Step 2: Convert to fraction form
    8,707.01/12,015.64 = 4,929.80/x
  3. Step 3: Cross multiply
    8,707.01x = 12,015.64 × 4,929.80
  4. Step 4: Simplify right side
    8,707.01x = 59,234,774.67
  5. Step 5: Solve for x
    x = 59,234,774.67/8,707.01
  6. Step 6: Final answer
    x = 6,803.11

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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.