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Finding the Fourth Proportional to 4,980.78, 6,871.68 and 3,303

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Solution

The fourth proportional to 4,980.78, 6,871.68 and 3,303 is: 4,556.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,980.78 : 6,871.68 = 3,303 : x
  2. Step 2: Convert to fraction form
    4,980.78/6,871.68 = 3,303/x
  3. Step 3: Cross multiply
    4,980.78x = 6,871.68 × 3,303
  4. Step 4: Simplify right side
    4,980.78x = 22,697,159.04
  5. Step 5: Solve for x
    x = 22,697,159.04/4,980.78
  6. Step 6: Final answer
    x = 4,556.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.