Home / 7,818.40-11,728.61-2,551.56

Finding the Fourth Proportional to 7,818.40, 11,728.61 and 2,551.56

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Solution

The fourth proportional to 7,818.40, 11,728.61 and 2,551.56 is: 3,827.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,818.40 : 11,728.61 = 2,551.56 : x
  2. Step 2: Convert to fraction form
    7,818.40/11,728.61 = 2,551.56/x
  3. Step 3: Cross multiply
    7,818.40x = 11,728.61 × 2,551.56
  4. Step 4: Simplify right side
    7,818.40x = 29,926,252.13
  5. Step 5: Solve for x
    x = 29,926,252.13/7,818.40
  6. Step 6: Final answer
    x = 3,827.67

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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.