Home / 5,918.24-8,170.56-3,931.52

Finding the Fourth Proportional to 5,918.24, 8,170.56 and 3,931.52

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Solution

The fourth proportional to 5,918.24, 8,170.56 and 3,931.52 is: 5,427.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,918.24 : 8,170.56 = 3,931.52 : x
  2. Step 2: Convert to fraction form
    5,918.24/8,170.56 = 3,931.52/x
  3. Step 3: Cross multiply
    5,918.24x = 8,170.56 × 3,931.52
  4. Step 4: Simplify right side
    5,918.24x = 32,122,720.05
  5. Step 5: Solve for x
    x = 32,122,720.05/5,918.24
  6. Step 6: Final answer
    x = 5,427.75

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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.