Home / 3,127.86-4,692.51-1,047.87

Finding the Fourth Proportional to 3,127.86, 4,692.51 and 1,047.87

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Solution

The fourth proportional to 3,127.86, 4,692.51 and 1,047.87 is: 1,572.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.86 : 4,692.51 = 1,047.87 : x
  2. Step 2: Convert to fraction form
    3,127.86/4,692.51 = 1,047.87/x
  3. Step 3: Cross multiply
    3,127.86x = 4,692.51 × 1,047.87
  4. Step 4: Simplify right side
    3,127.86x = 4,917,140.45
  5. Step 5: Solve for x
    x = 4,917,140.45/3,127.86
  6. Step 6: Final answer
    x = 1,572.05

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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.