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Finding the Fourth Proportional to 7,830.96, 11,689.59 and 7,252.80

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Solution

The fourth proportional to 7,830.96, 11,689.59 and 7,252.80 is: 10,826.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,830.96 : 11,689.59 = 7,252.80 : x
  2. Step 2: Convert to fraction form
    7,830.96/11,689.59 = 7,252.80/x
  3. Step 3: Cross multiply
    7,830.96x = 11,689.59 × 7,252.80
  4. Step 4: Simplify right side
    7,830.96x = 84,782,258.35
  5. Step 5: Solve for x
    x = 84,782,258.35/7,830.96
  6. Step 6: Final answer
    x = 10,826.55

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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.