Home / 5,185.23-7,155.51-2,827.40

Finding the Fourth Proportional to 5,185.23, 7,155.51 and 2,827.40

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Solution

The fourth proportional to 5,185.23, 7,155.51 and 2,827.40 is: 3,901.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185.23 : 7,155.51 = 2,827.40 : x
  2. Step 2: Convert to fraction form
    5,185.23/7,155.51 = 2,827.40/x
  3. Step 3: Cross multiply
    5,185.23x = 7,155.51 × 2,827.40
  4. Step 4: Simplify right side
    5,185.23x = 20,231,453.20
  5. Step 5: Solve for x
    x = 20,231,453.20/5,185.23
  6. Step 6: Final answer
    x = 3,901.75

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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.