Home / 8,155.77-11,255.40-5,170.52

Finding the Fourth Proportional to 8,155.77, 11,255.40 and 5,170.52

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Solution

The fourth proportional to 8,155.77, 11,255.40 and 5,170.52 is: 7,135.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,155.77 : 11,255.40 = 5,170.52 : x
  2. Step 2: Convert to fraction form
    8,155.77/11,255.40 = 5,170.52/x
  3. Step 3: Cross multiply
    8,155.77x = 11,255.40 × 5,170.52
  4. Step 4: Simplify right side
    8,155.77x = 58,196,214.53
  5. Step 5: Solve for x
    x = 58,196,214.53/8,155.77
  6. Step 6: Final answer
    x = 7,135.59

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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.