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Finding the Fourth Proportional to 4,786.57, 7,178.81 and 1,499.23

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Solution

The fourth proportional to 4,786.57, 7,178.81 and 1,499.23 is: 2,248.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,786.57 : 7,178.81 = 1,499.23 : x
  2. Step 2: Convert to fraction form
    4,786.57/7,178.81 = 1,499.23/x
  3. Step 3: Cross multiply
    4,786.57x = 7,178.81 × 1,499.23
  4. Step 4: Simplify right side
    4,786.57x = 10,762,673.12
  5. Step 5: Solve for x
    x = 10,762,673.12/4,786.57
  6. Step 6: Final answer
    x = 2,248.52

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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.