Home / 2,772.14-4,158.11-1,128.63

Finding the Fourth Proportional to 2,772.14, 4,158.11 and 1,128.63

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Solution

The fourth proportional to 2,772.14, 4,158.11 and 1,128.63 is: 1,692.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,772.14 : 4,158.11 = 1,128.63 : x
  2. Step 2: Convert to fraction form
    2,772.14/4,158.11 = 1,128.63/x
  3. Step 3: Cross multiply
    2,772.14x = 4,158.11 × 1,128.63
  4. Step 4: Simplify right side
    2,772.14x = 4,692,962.05
  5. Step 5: Solve for x
    x = 4,692,962.05/2,772.14
  6. Step 6: Final answer
    x = 1,692.91

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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.