Home / 2,812.72-4,216.36-2,572.16

Finding the Fourth Proportional to 2,812.72, 4,216.36 and 2,572.16

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Solution

The fourth proportional to 2,812.72, 4,216.36 and 2,572.16 is: 3,855.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.72 : 4,216.36 = 2,572.16 : x
  2. Step 2: Convert to fraction form
    2,812.72/4,216.36 = 2,572.16/x
  3. Step 3: Cross multiply
    2,812.72x = 4,216.36 × 2,572.16
  4. Step 4: Simplify right side
    2,812.72x = 10,845,152.54
  5. Step 5: Solve for x
    x = 10,845,152.54/2,812.72
  6. Step 6: Final answer
    x = 3,855.75

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1.5x scale

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.