Home / 2,812.47-4,212.13-2,223.51

Finding the Fourth Proportional to 2,812.47, 4,212.13 and 2,223.51

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Solution

The fourth proportional to 2,812.47, 4,212.13 and 2,223.51 is: 3,330.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.47 : 4,212.13 = 2,223.51 : x
  2. Step 2: Convert to fraction form
    2,812.47/4,212.13 = 2,223.51/x
  3. Step 3: Cross multiply
    2,812.47x = 4,212.13 × 2,223.51
  4. Step 4: Simplify right side
    2,812.47x = 9,365,713.18
  5. Step 5: Solve for x
    x = 9,365,713.18/2,812.47
  6. Step 6: Final answer
    x = 3,330.07

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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.