Home / 5,185.13-7,155.47-2,827.28

Finding the Fourth Proportional to 5,185.13, 7,155.47 and 2,827.28

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Solution

The fourth proportional to 5,185.13, 7,155.47 and 2,827.28 is: 3,901.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185.13 : 7,155.47 = 2,827.28 : x
  2. Step 2: Convert to fraction form
    5,185.13/7,155.47 = 2,827.28/x
  3. Step 3: Cross multiply
    5,185.13x = 7,155.47 × 2,827.28
  4. Step 4: Simplify right side
    5,185.13x = 20,230,542.18
  5. Step 5: Solve for x
    x = 20,230,542.18/5,185.13
  6. Step 6: Final answer
    x = 3,901.65

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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.