Home / 7,917.80-10,931.72-5,086.26

Finding the Fourth Proportional to 7,917.80, 10,931.72 and 5,086.26

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Solution

The fourth proportional to 7,917.80, 10,931.72 and 5,086.26 is: 7,022.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,917.80 : 10,931.72 = 5,086.26 : x
  2. Step 2: Convert to fraction form
    7,917.80/10,931.72 = 5,086.26/x
  3. Step 3: Cross multiply
    7,917.80x = 10,931.72 × 5,086.26
  4. Step 4: Simplify right side
    7,917.80x = 55,601,544.74
  5. Step 5: Solve for x
    x = 55,601,544.74/7,917.80
  6. Step 6: Final answer
    x = 7,022.35

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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.