Home / 5,185.18-7,155.84-2,827.36

Finding the Fourth Proportional to 5,185.18, 7,155.84 and 2,827.36

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Solution

The fourth proportional to 5,185.18, 7,155.84 and 2,827.36 is: 3,901.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185.18 : 7,155.84 = 2,827.36 : x
  2. Step 2: Convert to fraction form
    5,185.18/7,155.84 = 2,827.36/x
  3. Step 3: Cross multiply
    5,185.18x = 7,155.84 × 2,827.36
  4. Step 4: Simplify right side
    5,185.18x = 20,232,135.78
  5. Step 5: Solve for x
    x = 20,232,135.78/5,185.18
  6. Step 6: Final answer
    x = 3,901.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.