Home / 3,129.37-4,319.13-2,235.54

Finding the Fourth Proportional to 3,129.37, 4,319.13 and 2,235.54

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Solution

The fourth proportional to 3,129.37, 4,319.13 and 2,235.54 is: 3,085.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.37 : 4,319.13 = 2,235.54 : x
  2. Step 2: Convert to fraction form
    3,129.37/4,319.13 = 2,235.54/x
  3. Step 3: Cross multiply
    3,129.37x = 4,319.13 × 2,235.54
  4. Step 4: Simplify right side
    3,129.37x = 9,655,587.88
  5. Step 5: Solve for x
    x = 9,655,587.88/3,129.37
  6. Step 6: Final answer
    x = 3,085.47

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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.