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Finding the Fourth Proportional to 7,950.30, 10,976.76 and 7,108.32

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Solution

The fourth proportional to 7,950.30, 10,976.76 and 7,108.32 is: 9,814.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,950.30 : 10,976.76 = 7,108.32 : x
  2. Step 2: Convert to fraction form
    7,950.30/10,976.76 = 7,108.32/x
  3. Step 3: Cross multiply
    7,950.30x = 10,976.76 × 7,108.32
  4. Step 4: Simplify right side
    7,950.30x = 78,026,322.64
  5. Step 5: Solve for x
    x = 78,026,322.64/7,950.30
  6. Step 6: Final answer
    x = 9,814.26

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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.