Home / 3,129.77-4,319.02-1,713.43

Finding the Fourth Proportional to 3,129.77, 4,319.02 and 1,713.43

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Solution

The fourth proportional to 3,129.77, 4,319.02 and 1,713.43 is: 2,364.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.77 : 4,319.02 = 1,713.43 : x
  2. Step 2: Convert to fraction form
    3,129.77/4,319.02 = 1,713.43/x
  3. Step 3: Cross multiply
    3,129.77x = 4,319.02 × 1,713.43
  4. Step 4: Simplify right side
    3,129.77x = 7,400,338.44
  5. Step 5: Solve for x
    x = 7,400,338.44/3,129.77
  6. Step 6: Final answer
    x = 2,364.50

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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.