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Finding the Fourth Proportional to 4,964.61, 7,447.59 and 1,678.64

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Solution

The fourth proportional to 4,964.61, 7,447.59 and 1,678.64 is: 2,518.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,964.61 : 7,447.59 = 1,678.64 : x
  2. Step 2: Convert to fraction form
    4,964.61/7,447.59 = 1,678.64/x
  3. Step 3: Cross multiply
    4,964.61x = 7,447.59 × 1,678.64
  4. Step 4: Simplify right side
    4,964.61x = 12,501,841.10
  5. Step 5: Solve for x
    x = 12,501,841.10/4,964.61
  6. Step 6: Final answer
    x = 2,518.19

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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.