Home / 1,778.85-2,666.70-1,154.43

Finding the Fourth Proportional to 1,778.85, 2,666.70 and 1,154.43

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Solution

The fourth proportional to 1,778.85, 2,666.70 and 1,154.43 is: 1,730.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,778.85 : 2,666.70 = 1,154.43 : x
  2. Step 2: Convert to fraction form
    1,778.85/2,666.70 = 1,154.43/x
  3. Step 3: Cross multiply
    1,778.85x = 2,666.70 × 1,154.43
  4. Step 4: Simplify right side
    1,778.85x = 3,078,518.48
  5. Step 5: Solve for x
    x = 3,078,518.48/1,778.85
  6. Step 6: Final answer
    x = 1,730.62

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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.