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Finding the Fourth Proportional to 7,107.58, 10,660.65 and 1,913.14

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Solution

The fourth proportional to 7,107.58, 10,660.65 and 1,913.14 is: 2,869.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,107.58 : 10,660.65 = 1,913.14 : x
  2. Step 2: Convert to fraction form
    7,107.58/10,660.65 = 1,913.14/x
  3. Step 3: Cross multiply
    7,107.58x = 10,660.65 × 1,913.14
  4. Step 4: Simplify right side
    7,107.58x = 20,395,315.94
  5. Step 5: Solve for x
    x = 20,395,315.94/7,107.58
  6. Step 6: Final answer
    x = 2,869.52

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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.