Home / 2,291.24-3,160.44-1,406.72

Finding the Fourth Proportional to 2,291.24, 3,160.44 and 1,406.72

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Solution

The fourth proportional to 2,291.24, 3,160.44 and 1,406.72 is: 1,940.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,291.24 : 3,160.44 = 1,406.72 : x
  2. Step 2: Convert to fraction form
    2,291.24/3,160.44 = 1,406.72/x
  3. Step 3: Cross multiply
    2,291.24x = 3,160.44 × 1,406.72
  4. Step 4: Simplify right side
    2,291.24x = 4,445,854.16
  5. Step 5: Solve for x
    x = 4,445,854.16/2,291.24
  6. Step 6: Final answer
    x = 1,940.37

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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.