Home / 2,143.47-3,215.29-1,048.75

Finding the Fourth Proportional to 2,143.47, 3,215.29 and 1,048.75

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Solution

The fourth proportional to 2,143.47, 3,215.29 and 1,048.75 is: 1,573.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.47 : 3,215.29 = 1,048.75 : x
  2. Step 2: Convert to fraction form
    2,143.47/3,215.29 = 1,048.75/x
  3. Step 3: Cross multiply
    2,143.47x = 3,215.29 × 1,048.75
  4. Step 4: Simplify right side
    2,143.47x = 3,372,035.39
  5. Step 5: Solve for x
    x = 3,372,035.39/2,143.47
  6. Step 6: Final answer
    x = 1,573.17

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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.