Home / 4,761.21-7,143.03-1,989.12

Finding the Fourth Proportional to 4,761.21, 7,143.03 and 1,989.12

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Solution

The fourth proportional to 4,761.21, 7,143.03 and 1,989.12 is: 2,984.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,761.21 : 7,143.03 = 1,989.12 : x
  2. Step 2: Convert to fraction form
    4,761.21/7,143.03 = 1,989.12/x
  3. Step 3: Cross multiply
    4,761.21x = 7,143.03 × 1,989.12
  4. Step 4: Simplify right side
    4,761.21x = 14,208,343.83
  5. Step 5: Solve for x
    x = 14,208,343.83/4,761.21
  6. Step 6: Final answer
    x = 2,984.19

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Double scale
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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.