Home / 3,129.65-4,318.99-1,713.34

Finding the Fourth Proportional to 3,129.65, 4,318.99 and 1,713.34

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Solution

The fourth proportional to 3,129.65, 4,318.99 and 1,713.34 is: 2,364.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.65 : 4,318.99 = 1,713.34 : x
  2. Step 2: Convert to fraction form
    3,129.65/4,318.99 = 1,713.34/x
  3. Step 3: Cross multiply
    3,129.65x = 4,318.99 × 1,713.34
  4. Step 4: Simplify right side
    3,129.65x = 7,399,883.25
  5. Step 5: Solve for x
    x = 7,399,883.25/3,129.65
  6. Step 6: Final answer
    x = 2,364.45

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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.