Home / 3,135.60-4,703.94-1,287.72

Finding the Fourth Proportional to 3,135.60, 4,703.94 and 1,287.72

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Solution

The fourth proportional to 3,135.60, 4,703.94 and 1,287.72 is: 1,931.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.60 : 4,703.94 = 1,287.72 : x
  2. Step 2: Convert to fraction form
    3,135.60/4,703.94 = 1,287.72/x
  3. Step 3: Cross multiply
    3,135.60x = 4,703.94 × 1,287.72
  4. Step 4: Simplify right side
    3,135.60x = 6,057,357.62
  5. Step 5: Solve for x
    x = 6,057,357.62/3,135.60
  6. Step 6: Final answer
    x = 1,931.80

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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.