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Finding the Fourth Proportional to 3,129.93, 4,319.15 and 1,713.62

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Solution

The fourth proportional to 3,129.93, 4,319.15 and 1,713.62 is: 2,364.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.93 : 4,319.15 = 1,713.62 : x
  2. Step 2: Convert to fraction form
    3,129.93/4,319.15 = 1,713.62/x
  3. Step 3: Cross multiply
    3,129.93x = 4,319.15 × 1,713.62
  4. Step 4: Simplify right side
    3,129.93x = 7,401,384.05
  5. Step 5: Solve for x
    x = 7,401,384.05/3,129.93
  6. Step 6: Final answer
    x = 2,364.71

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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.