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Finding the Fourth Proportional to 7,803.52, 11,690.72 and 3,903.36

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Solution

The fourth proportional to 7,803.52, 11,690.72 and 3,903.36 is: 5,847.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,803.52 : 11,690.72 = 3,903.36 : x
  2. Step 2: Convert to fraction form
    7,803.52/11,690.72 = 3,903.36/x
  3. Step 3: Cross multiply
    7,803.52x = 11,690.72 × 3,903.36
  4. Step 4: Simplify right side
    7,803.52x = 45,633,088.82
  5. Step 5: Solve for x
    x = 45,633,088.82/7,803.52
  6. Step 6: Final answer
    x = 5,847.76

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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.