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Finding the Fourth Proportional to 7,309.76, 10,964.16 and 4,385.92

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Solution

The fourth proportional to 7,309.76, 10,964.16 and 4,385.92 is: 6,578.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,309.76 : 10,964.16 = 4,385.92 : x
  2. Step 2: Convert to fraction form
    7,309.76/10,964.16 = 4,385.92/x
  3. Step 3: Cross multiply
    7,309.76x = 10,964.16 × 4,385.92
  4. Step 4: Simplify right side
    7,309.76x = 48,087,928.63
  5. Step 5: Solve for x
    x = 48,087,928.63/7,309.76
  6. Step 6: Final answer
    x = 6,578.59

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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.