Home / 5,170.91-7,135.61-2,813.00

Finding the Fourth Proportional to 5,170.91, 7,135.61 and 2,813.00

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Solution

The fourth proportional to 5,170.91, 7,135.61 and 2,813.00 is: 3,881.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,170.91 : 7,135.61 = 2,813.00 : x
  2. Step 2: Convert to fraction form
    5,170.91/7,135.61 = 2,813.00/x
  3. Step 3: Cross multiply
    5,170.91x = 7,135.61 × 2,813.00
  4. Step 4: Simplify right side
    5,170.91x = 20,072,421.19
  5. Step 5: Solve for x
    x = 20,072,421.19/5,170.91
  6. Step 6: Final answer
    x = 3,881.80

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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.