Home / 7,785.40-11,618.20-6,954.96

Finding the Fourth Proportional to 7,785.40, 11,618.20 and 6,954.96

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Solution

The fourth proportional to 7,785.40, 11,618.20 and 6,954.96 is: 10,378.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,785.40 : 11,618.20 = 6,954.96 : x
  2. Step 2: Convert to fraction form
    7,785.40/11,618.20 = 6,954.96/x
  3. Step 3: Cross multiply
    7,785.40x = 11,618.20 × 6,954.96
  4. Step 4: Simplify right side
    7,785.40x = 80,804,116.27
  5. Step 5: Solve for x
    x = 80,804,116.27/7,785.40
  6. Step 6: Final answer
    x = 10,378.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.