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Finding the Fourth Proportional to 7,976.21, 11,008.21 and 4,574.55

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Solution

The fourth proportional to 7,976.21, 11,008.21 and 4,574.55 is: 6,313.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,976.21 : 11,008.21 = 4,574.55 : x
  2. Step 2: Convert to fraction form
    7,976.21/11,008.21 = 4,574.55/x
  3. Step 3: Cross multiply
    7,976.21x = 11,008.21 × 4,574.55
  4. Step 4: Simplify right side
    7,976.21x = 50,357,595.62
  5. Step 5: Solve for x
    x = 50,357,595.62/7,976.21
  6. Step 6: Final answer
    x = 6,313.48

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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.