Home / 2,126.21-3,189.32-1,158.47

Finding the Fourth Proportional to 2,126.21, 3,189.32 and 1,158.47

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Solution

The fourth proportional to 2,126.21, 3,189.32 and 1,158.47 is: 1,737.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.21 : 3,189.32 = 1,158.47 : x
  2. Step 2: Convert to fraction form
    2,126.21/3,189.32 = 1,158.47/x
  3. Step 3: Cross multiply
    2,126.21x = 3,189.32 × 1,158.47
  4. Step 4: Simplify right side
    2,126.21x = 3,694,715.59
  5. Step 5: Solve for x
    x = 3,694,715.59/2,126.21
  6. Step 6: Final answer
    x = 1,737.70

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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.