Home / 4,812.51-7,218.78-2,215.47

Finding the Fourth Proportional to 4,812.51, 7,218.78 and 2,215.47

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Solution

The fourth proportional to 4,812.51, 7,218.78 and 2,215.47 is: 3,323.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,812.51 : 7,218.78 = 2,215.47 : x
  2. Step 2: Convert to fraction form
    4,812.51/7,218.78 = 2,215.47/x
  3. Step 3: Cross multiply
    4,812.51x = 7,218.78 × 2,215.47
  4. Step 4: Simplify right side
    4,812.51x = 15,992,990.53
  5. Step 5: Solve for x
    x = 15,992,990.53/4,812.51
  6. Step 6: Final answer
    x = 3,323.21

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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.