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Finding the Fourth Proportional to 4,455.18, 6,651 and 4,158.72

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Solution

The fourth proportional to 4,455.18, 6,651 and 4,158.72 is: 6,208.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,455.18 : 6,651 = 4,158.72 : x
  2. Step 2: Convert to fraction form
    4,455.18/6,651 = 4,158.72/x
  3. Step 3: Cross multiply
    4,455.18x = 6,651 × 4,158.72
  4. Step 4: Simplify right side
    4,455.18x = 27,659,646.72
  5. Step 5: Solve for x
    x = 27,659,646.72/4,455.18
  6. Step 6: Final answer
    x = 6,208.42

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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.