Home / 5,311.40-7,969.24-2,391.08

Finding the Fourth Proportional to 5,311.40, 7,969.24 and 2,391.08

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Solution

The fourth proportional to 5,311.40, 7,969.24 and 2,391.08 is: 3,587.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,311.40 : 7,969.24 = 2,391.08 : x
  2. Step 2: Convert to fraction form
    5,311.40/7,969.24 = 2,391.08/x
  3. Step 3: Cross multiply
    5,311.40x = 7,969.24 × 2,391.08
  4. Step 4: Simplify right side
    5,311.40x = 19,055,090.38
  5. Step 5: Solve for x
    x = 19,055,090.38/5,311.40
  6. Step 6: Final answer
    x = 3,587.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.