Home / 3,243.09-4,475.86-2,124.31

Finding the Fourth Proportional to 3,243.09, 4,475.86 and 2,124.31

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Solution

The fourth proportional to 3,243.09, 4,475.86 and 2,124.31 is: 2,931.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,243.09 : 4,475.86 = 2,124.31 : x
  2. Step 2: Convert to fraction form
    3,243.09/4,475.86 = 2,124.31/x
  3. Step 3: Cross multiply
    3,243.09x = 4,475.86 × 2,124.31
  4. Step 4: Simplify right side
    3,243.09x = 9,508,114.16
  5. Step 5: Solve for x
    x = 9,508,114.16/3,243.09
  6. Step 6: Final answer
    x = 2,931.81

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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.