Home / 4,621.14-6,929.28-2,646.78

Finding the Fourth Proportional to 4,621.14, 6,929.28 and 2,646.78

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Solution

The fourth proportional to 4,621.14, 6,929.28 and 2,646.78 is: 3,968.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,621.14 : 6,929.28 = 2,646.78 : x
  2. Step 2: Convert to fraction form
    4,621.14/6,929.28 = 2,646.78/x
  3. Step 3: Cross multiply
    4,621.14x = 6,929.28 × 2,646.78
  4. Step 4: Simplify right side
    4,621.14x = 18,340,279.72
  5. Step 5: Solve for x
    x = 18,340,279.72/4,621.14
  6. Step 6: Final answer
    x = 3,968.78

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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.