Home / 2,339.64-3,228.66-1,291.68

Finding the Fourth Proportional to 2,339.64, 3,228.66 and 1,291.68

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Solution

The fourth proportional to 2,339.64, 3,228.66 and 1,291.68 is: 1,782.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,339.64 : 3,228.66 = 1,291.68 : x
  2. Step 2: Convert to fraction form
    2,339.64/3,228.66 = 1,291.68/x
  3. Step 3: Cross multiply
    2,339.64x = 3,228.66 × 1,291.68
  4. Step 4: Simplify right side
    2,339.64x = 4,170,395.55
  5. Step 5: Solve for x
    x = 4,170,395.55/2,339.64
  6. Step 6: Final answer
    x = 1,782.49

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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.