Home / 3,127.12-4,692.39-1,047.76

Finding the Fourth Proportional to 3,127.12, 4,692.39 and 1,047.76

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Solution

The fourth proportional to 3,127.12, 4,692.39 and 1,047.76 is: 1,572.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.12 : 4,692.39 = 1,047.76 : x
  2. Step 2: Convert to fraction form
    3,127.12/4,692.39 = 1,047.76/x
  3. Step 3: Cross multiply
    3,127.12x = 4,692.39 × 1,047.76
  4. Step 4: Simplify right side
    3,127.12x = 4,916,498.55
  5. Step 5: Solve for x
    x = 4,916,498.55/3,127.12
  6. Step 6: Final answer
    x = 1,572.21

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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.