Home / 2,812.16-4,218.24-760.32

Finding the Fourth Proportional to 2,812.16, 4,218.24 and 760.32

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Solution

The fourth proportional to 2,812.16, 4,218.24 and 760.32 is: 1,140.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.16 : 4,218.24 = 760.32 : x
  2. Step 2: Convert to fraction form
    2,812.16/4,218.24 = 760.32/x
  3. Step 3: Cross multiply
    2,812.16x = 4,218.24 × 760.32
  4. Step 4: Simplify right side
    2,812.16x = 3,207,212.24
  5. Step 5: Solve for x
    x = 3,207,212.24/2,812.16
  6. Step 6: Final answer
    x = 1,140.48

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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.