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Finding the Fourth Proportional to 2,259.84, 3,390.12 and 1,105.68

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Solution

The fourth proportional to 2,259.84, 3,390.12 and 1,105.68 is: 1,658.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,259.84 : 3,390.12 = 1,105.68 : x
  2. Step 2: Convert to fraction form
    2,259.84/3,390.12 = 1,105.68/x
  3. Step 3: Cross multiply
    2,259.84x = 3,390.12 × 1,105.68
  4. Step 4: Simplify right side
    2,259.84x = 3,748,387.88
  5. Step 5: Solve for x
    x = 3,748,387.88/2,259.84
  6. Step 6: Final answer
    x = 1,658.70

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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.