Home / 5,103.60-7,655.40-3,135.30

Finding the Fourth Proportional to 5,103.60, 7,655.40 and 3,135.30

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Solution

The fourth proportional to 5,103.60, 7,655.40 and 3,135.30 is: 4,702.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,103.60 : 7,655.40 = 3,135.30 : x
  2. Step 2: Convert to fraction form
    5,103.60/7,655.40 = 3,135.30/x
  3. Step 3: Cross multiply
    5,103.60x = 7,655.40 × 3,135.30
  4. Step 4: Simplify right side
    5,103.60x = 24,001,975.62
  5. Step 5: Solve for x
    x = 24,001,975.62/5,103.60
  6. Step 6: Final answer
    x = 4,702.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.