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Finding the Fourth Proportional to 2,755.76, 4,133.88 and 906.89

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Solution

The fourth proportional to 2,755.76, 4,133.88 and 906.89 is: 1,360.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,755.76 : 4,133.88 = 906.89 : x
  2. Step 2: Convert to fraction form
    2,755.76/4,133.88 = 906.89/x
  3. Step 3: Cross multiply
    2,755.76x = 4,133.88 × 906.89
  4. Step 4: Simplify right side
    2,755.76x = 3,748,953.76
  5. Step 5: Solve for x
    x = 3,748,953.76/2,755.76
  6. Step 6: Final answer
    x = 1,360.41

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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.