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Finding the Fourth Proportional to 7,903.14, 11,782.68 and 7,701.18

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Solution

The fourth proportional to 7,903.14, 11,782.68 and 7,701.18 is: 11,481.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,903.14 : 11,782.68 = 7,701.18 : x
  2. Step 2: Convert to fraction form
    7,903.14/11,782.68 = 7,701.18/x
  3. Step 3: Cross multiply
    7,903.14x = 11,782.68 × 7,701.18
  4. Step 4: Simplify right side
    7,903.14x = 90,740,539.56
  5. Step 5: Solve for x
    x = 90,740,539.56/7,903.14
  6. Step 6: Final answer
    x = 11,481.58

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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.