Home / 3,289.40-4,542.56-2,814.51

Finding the Fourth Proportional to 3,289.40, 4,542.56 and 2,814.51

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Solution

The fourth proportional to 3,289.40, 4,542.56 and 2,814.51 is: 3,886.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,289.40 : 4,542.56 = 2,814.51 : x
  2. Step 2: Convert to fraction form
    3,289.40/4,542.56 = 2,814.51/x
  3. Step 3: Cross multiply
    3,289.40x = 4,542.56 × 2,814.51
  4. Step 4: Simplify right side
    3,289.40x = 12,785,080.68
  5. Step 5: Solve for x
    x = 12,785,080.68/3,289.40
  6. Step 6: Final answer
    x = 3,886.76

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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.