Home / 1,894.47-2,615.54-1,222.87

Finding the Fourth Proportional to 1,894.47, 2,615.54 and 1,222.87

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Solution

The fourth proportional to 1,894.47, 2,615.54 and 1,222.87 is: 1,688.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,894.47 : 2,615.54 = 1,222.87 : x
  2. Step 2: Convert to fraction form
    1,894.47/2,615.54 = 1,222.87/x
  3. Step 3: Cross multiply
    1,894.47x = 2,615.54 × 1,222.87
  4. Step 4: Simplify right side
    1,894.47x = 3,198,458.86
  5. Step 5: Solve for x
    x = 3,198,458.86/1,894.47
  6. Step 6: Final answer
    x = 1,688.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.