Home / 8,395.85-11,587.39-5,420.33

Finding the Fourth Proportional to 8,395.85, 11,587.39 and 5,420.33

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Solution

The fourth proportional to 8,395.85, 11,587.39 and 5,420.33 is: 7,480.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,395.85 : 11,587.39 = 5,420.33 : x
  2. Step 2: Convert to fraction form
    8,395.85/11,587.39 = 5,420.33/x
  3. Step 3: Cross multiply
    8,395.85x = 11,587.39 × 5,420.33
  4. Step 4: Simplify right side
    8,395.85x = 62,807,493.06
  5. Step 5: Solve for x
    x = 62,807,493.06/8,395.85
  6. Step 6: Final answer
    x = 7,480.78

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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.