Home / 3,903.09-5,386.11-2,134.65

Finding the Fourth Proportional to 3,903.09, 5,386.11 and 2,134.65

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Solution

The fourth proportional to 3,903.09, 5,386.11 and 2,134.65 is: 2,945.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,903.09 : 5,386.11 = 2,134.65 : x
  2. Step 2: Convert to fraction form
    3,903.09/5,386.11 = 2,134.65/x
  3. Step 3: Cross multiply
    3,903.09x = 5,386.11 × 2,134.65
  4. Step 4: Simplify right side
    3,903.09x = 11,497,459.71
  5. Step 5: Solve for x
    x = 11,497,459.71/3,903.09
  6. Step 6: Final answer
    x = 2,945.73

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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.