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Finding the Fourth Proportional to 8,700.51, 13,055.63 and 3,506.79

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Solution

The fourth proportional to 8,700.51, 13,055.63 and 3,506.79 is: 5,262.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,700.51 : 13,055.63 = 3,506.79 : x
  2. Step 2: Convert to fraction form
    8,700.51/13,055.63 = 3,506.79/x
  3. Step 3: Cross multiply
    8,700.51x = 13,055.63 × 3,506.79
  4. Step 4: Simplify right side
    8,700.51x = 45,783,352.73
  5. Step 5: Solve for x
    x = 45,783,352.73/8,700.51
  6. Step 6: Final answer
    x = 5,262.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.