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Finding the Fourth Proportional to 8,707.42, 13,061.15 and 2,133.63

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Solution

The fourth proportional to 8,707.42, 13,061.15 and 2,133.63 is: 3,200.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,707.42 : 13,061.15 = 2,133.63 : x
  2. Step 2: Convert to fraction form
    8,707.42/13,061.15 = 2,133.63/x
  3. Step 3: Cross multiply
    8,707.42x = 13,061.15 × 2,133.63
  4. Step 4: Simplify right side
    8,707.42x = 27,867,658.81
  5. Step 5: Solve for x
    x = 27,867,658.81/8,707.42
  6. Step 6: Final answer
    x = 3,200.45

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1.5x scale

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.