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Finding the Fourth Proportional to 5,652.86, 7,801.35 and 3,135.21

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Solution

The fourth proportional to 5,652.86, 7,801.35 and 3,135.21 is: 4,326.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,652.86 : 7,801.35 = 3,135.21 : x
  2. Step 2: Convert to fraction form
    5,652.86/7,801.35 = 3,135.21/x
  3. Step 3: Cross multiply
    5,652.86x = 7,801.35 × 3,135.21
  4. Step 4: Simplify right side
    5,652.86x = 24,458,890.04
  5. Step 5: Solve for x
    x = 24,458,890.04/5,652.86
  6. Step 6: Final answer
    x = 4,326.81

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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.