Home / 3,055.60-4,216.80-1,729.31

Finding the Fourth Proportional to 3,055.60, 4,216.80 and 1,729.31

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Solution

The fourth proportional to 3,055.60, 4,216.80 and 1,729.31 is: 2,386.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,055.60 : 4,216.80 = 1,729.31 : x
  2. Step 2: Convert to fraction form
    3,055.60/4,216.80 = 1,729.31/x
  3. Step 3: Cross multiply
    3,055.60x = 4,216.80 × 1,729.31
  4. Step 4: Simplify right side
    3,055.60x = 7,292,124.68
  5. Step 5: Solve for x
    x = 7,292,124.68/3,055.60
  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.