Home / 2,572.08-3,857.36-1,091.28

Finding the Fourth Proportional to 2,572.08, 3,857.36 and 1,091.28

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Solution

The fourth proportional to 2,572.08, 3,857.36 and 1,091.28 is: 1,636.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,572.08 : 3,857.36 = 1,091.28 : x
  2. Step 2: Convert to fraction form
    2,572.08/3,857.36 = 1,091.28/x
  3. Step 3: Cross multiply
    2,572.08x = 3,857.36 × 1,091.28
  4. Step 4: Simplify right side
    2,572.08x = 4,209,454.36
  5. Step 5: Solve for x
    x = 4,209,454.36/2,572.08
  6. Step 6: Final answer
    x = 1,636.60

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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.