Home / 3,178.13-4,762.64-1,788.55

Finding the Fourth Proportional to 3,178.13, 4,762.64 and 1,788.55

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Solution

The fourth proportional to 3,178.13, 4,762.64 and 1,788.55 is: 2,680.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.13 : 4,762.64 = 1,788.55 : x
  2. Step 2: Convert to fraction form
    3,178.13/4,762.64 = 1,788.55/x
  3. Step 3: Cross multiply
    3,178.13x = 4,762.64 × 1,788.55
  4. Step 4: Simplify right side
    3,178.13x = 8,518,212.34
  5. Step 5: Solve for x
    x = 8,518,212.34/3,178.13
  6. Step 6: Final answer
    x = 2,680.26

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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.