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Finding the Fourth Proportional to 7,156.53, 9,879.73 and 5,559.62

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Solution

The fourth proportional to 7,156.53, 9,879.73 and 5,559.62 is: 7,675.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,156.53 : 9,879.73 = 5,559.62 : x
  2. Step 2: Convert to fraction form
    7,156.53/9,879.73 = 5,559.62/x
  3. Step 3: Cross multiply
    7,156.53x = 9,879.73 × 5,559.62
  4. Step 4: Simplify right side
    7,156.53x = 54,927,481.20
  5. Step 5: Solve for x
    x = 54,927,481.20/7,156.53
  6. Step 6: Final answer
    x = 7,675.16

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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.