Home / 7,715.45-11,573.72-3,818.81

Finding the Fourth Proportional to 7,715.45, 11,573.72 and 3,818.81

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Solution

The fourth proportional to 7,715.45, 11,573.72 and 3,818.81 is: 5,728.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,715.45 : 11,573.72 = 3,818.81 : x
  2. Step 2: Convert to fraction form
    7,715.45/11,573.72 = 3,818.81/x
  3. Step 3: Cross multiply
    7,715.45x = 11,573.72 × 3,818.81
  4. Step 4: Simplify right side
    7,715.45x = 44,197,861.83
  5. Step 5: Solve for x
    x = 44,197,861.83/7,715.45
  6. Step 6: Final answer
    x = 5,728.49

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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.