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Finding the Fourth Proportional to 8,686.29, 11,987.04 and 4,707.51

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Solution

The fourth proportional to 8,686.29, 11,987.04 and 4,707.51 is: 6,496.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,686.29 : 11,987.04 = 4,707.51 : x
  2. Step 2: Convert to fraction form
    8,686.29/11,987.04 = 4,707.51/x
  3. Step 3: Cross multiply
    8,686.29x = 11,987.04 × 4,707.51
  4. Step 4: Simplify right side
    8,686.29x = 56,429,110.67
  5. Step 5: Solve for x
    x = 56,429,110.67/8,686.29
  6. Step 6: Final answer
    x = 6,496.34

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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.