Home / 1,256.22-1,871.64-1,194.21

Finding the Fourth Proportional to 1,256.22, 1,871.64 and 1,194.21

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Solution

The fourth proportional to 1,256.22, 1,871.64 and 1,194.21 is: 1,779.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,256.22 : 1,871.64 = 1,194.21 : x
  2. Step 2: Convert to fraction form
    1,256.22/1,871.64 = 1,194.21/x
  3. Step 3: Cross multiply
    1,256.22x = 1,871.64 × 1,194.21
  4. Step 4: Simplify right side
    1,256.22x = 2,235,131.20
  5. Step 5: Solve for x
    x = 2,235,131.20/1,256.22
  6. Step 6: Final answer
    x = 1,779.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.