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Finding the Fourth Proportional to 1,778.84, 2,666.44 and 682.92

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Solution

The fourth proportional to 1,778.84, 2,666.44 and 682.92 is: 1,023.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,778.84 : 2,666.44 = 682.92 : x
  2. Step 2: Convert to fraction form
    1,778.84/2,666.44 = 682.92/x
  3. Step 3: Cross multiply
    1,778.84x = 2,666.44 × 682.92
  4. Step 4: Simplify right side
    1,778.84x = 1,820,965.20
  5. Step 5: Solve for x
    x = 1,820,965.20/1,778.84
  6. Step 6: Final answer
    x = 1,023.68

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1.5x scale

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.