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Finding the Fourth Proportional to 4,674.66, 7,012.72 and 1,388.08

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Solution

The fourth proportional to 4,674.66, 7,012.72 and 1,388.08 is: 2,082.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,674.66 : 7,012.72 = 1,388.08 : x
  2. Step 2: Convert to fraction form
    4,674.66/7,012.72 = 1,388.08/x
  3. Step 3: Cross multiply
    4,674.66x = 7,012.72 × 1,388.08
  4. Step 4: Simplify right side
    4,674.66x = 9,734,216.38
  5. Step 5: Solve for x
    x = 9,734,216.38/4,674.66
  6. Step 6: Final answer
    x = 2,082.34

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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.