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Finding the Fourth Proportional to 8,707.12, 13,055.20 and 3,773

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Solution

The fourth proportional to 8,707.12, 13,055.20 and 3,773 is: 5,657.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,707.12 : 13,055.20 = 3,773 : x
  2. Step 2: Convert to fraction form
    8,707.12/13,055.20 = 3,773/x
  3. Step 3: Cross multiply
    8,707.12x = 13,055.20 × 3,773
  4. Step 4: Simplify right side
    8,707.12x = 49,257,269.60
  5. Step 5: Solve for x
    x = 49,257,269.60/8,707.12
  6. Step 6: Final answer
    x = 5,657.13

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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.