Home / 3,129.98-4,319.20-1,713.59

Finding the Fourth Proportional to 3,129.98, 4,319.20 and 1,713.59

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Solution

The fourth proportional to 3,129.98, 4,319.20 and 1,713.59 is: 2,364.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.98 : 4,319.20 = 1,713.59 : x
  2. Step 2: Convert to fraction form
    3,129.98/4,319.20 = 1,713.59/x
  3. Step 3: Cross multiply
    3,129.98x = 4,319.20 × 1,713.59
  4. Step 4: Simplify right side
    3,129.98x = 7,401,329.85
  5. Step 5: Solve for x
    x = 7,401,329.85/3,129.98
  6. Step 6: Final answer
    x = 2,364.66

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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.