Home / 3,129.59-4,319.19-1,803.26

Finding the Fourth Proportional to 3,129.59, 4,319.19 and 1,803.26

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Solution

The fourth proportional to 3,129.59, 4,319.19 and 1,803.26 is: 2,488.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.59 : 4,319.19 = 1,803.26 : x
  2. Step 2: Convert to fraction form
    3,129.59/4,319.19 = 1,803.26/x
  3. Step 3: Cross multiply
    3,129.59x = 4,319.19 × 1,803.26
  4. Step 4: Simplify right side
    3,129.59x = 7,788,600.96
  5. Step 5: Solve for x
    x = 7,788,600.96/3,129.59
  6. Step 6: Final answer
    x = 2,488.70

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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.