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Finding the Fourth Proportional to 8,707.68, 12,018.52 and 5,723.79

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Solution

The fourth proportional to 8,707.68, 12,018.52 and 5,723.79 is: 7,900.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,707.68 : 12,018.52 = 5,723.79 : x
  2. Step 2: Convert to fraction form
    8,707.68/12,018.52 = 5,723.79/x
  3. Step 3: Cross multiply
    8,707.68x = 12,018.52 × 5,723.79
  4. Step 4: Simplify right side
    8,707.68x = 68,791,486.02
  5. Step 5: Solve for x
    x = 68,791,486.02/8,707.68
  6. Step 6: Final answer
    x = 7,900.09

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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.