Home / 5,169.21-7,133.66-2,931.02

Finding the Fourth Proportional to 5,169.21, 7,133.66 and 2,931.02

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Solution

The fourth proportional to 5,169.21, 7,133.66 and 2,931.02 is: 4,044.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,169.21 : 7,133.66 = 2,931.02 : x
  2. Step 2: Convert to fraction form
    5,169.21/7,133.66 = 2,931.02/x
  3. Step 3: Cross multiply
    5,169.21x = 7,133.66 × 2,931.02
  4. Step 4: Simplify right side
    5,169.21x = 20,908,900.13
  5. Step 5: Solve for x
    x = 20,908,900.13/5,169.21
  6. Step 6: Final answer
    x = 4,044.89

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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.