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Finding the Fourth Proportional to 8,700.84, 13,051.20 and 2,127.12

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Solution

The fourth proportional to 8,700.84, 13,051.20 and 2,127.12 is: 3,190.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,700.84 : 13,051.20 = 2,127.12 : x
  2. Step 2: Convert to fraction form
    8,700.84/13,051.20 = 2,127.12/x
  3. Step 3: Cross multiply
    8,700.84x = 13,051.20 × 2,127.12
  4. Step 4: Simplify right side
    8,700.84x = 27,761,468.54
  5. Step 5: Solve for x
    x = 27,761,468.54/8,700.84
  6. Step 6: Final answer
    x = 3,190.67

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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.