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Finding the Fourth Proportional to 3,055.61, 4,216.61 and 1,729.39

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Solution

The fourth proportional to 3,055.61, 4,216.61 and 1,729.39 is: 2,386.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,055.61 : 4,216.61 = 1,729.39 : x
  2. Step 2: Convert to fraction form
    3,055.61/4,216.61 = 1,729.39/x
  3. Step 3: Cross multiply
    3,055.61x = 4,216.61 × 1,729.39
  4. Step 4: Simplify right side
    3,055.61x = 7,292,149.04
  5. Step 5: Solve for x
    x = 7,292,149.04/3,055.61
  6. Step 6: Final answer
    x = 2,386.48

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1.5x scale

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.