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Finding the Fourth Proportional to 7,573.10, 11,359.64 and 3,187.70

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Solution

The fourth proportional to 7,573.10, 11,359.64 and 3,187.70 is: 4,781.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,573.10 : 11,359.64 = 3,187.70 : x
  2. Step 2: Convert to fraction form
    7,573.10/11,359.64 = 3,187.70/x
  3. Step 3: Cross multiply
    7,573.10x = 11,359.64 × 3,187.70
  4. Step 4: Simplify right side
    7,573.10x = 36,211,182.10
  5. Step 5: Solve for x
    x = 36,211,182.10/7,573.10
  6. Step 6: Final answer
    x = 4,781.56

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1.5x scale

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.