Home / 5,174.07-7,140.32-2,816.36

Finding the Fourth Proportional to 5,174.07, 7,140.32 and 2,816.36

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Solution

The fourth proportional to 5,174.07, 7,140.32 and 2,816.36 is: 3,886.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,174.07 : 7,140.32 = 2,816.36 : x
  2. Step 2: Convert to fraction form
    5,174.07/7,140.32 = 2,816.36/x
  3. Step 3: Cross multiply
    5,174.07x = 7,140.32 × 2,816.36
  4. Step 4: Simplify right side
    5,174.07x = 20,109,711.64
  5. Step 5: Solve for x
    x = 20,109,711.64/5,174.07
  6. Step 6: Final answer
    x = 3,886.63

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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.