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Finding the Fourth Proportional to 2,755.96, 4,134.45 and 907.15

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Solution

The fourth proportional to 2,755.96, 4,134.45 and 907.15 is: 1,360.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,755.96 : 4,134.45 = 907.15 : x
  2. Step 2: Convert to fraction form
    2,755.96/4,134.45 = 907.15/x
  3. Step 3: Cross multiply
    2,755.96x = 4,134.45 × 907.15
  4. Step 4: Simplify right side
    2,755.96x = 3,750,566.32
  5. Step 5: Solve for x
    x = 3,750,566.32/2,755.96
  6. Step 6: Final answer
    x = 1,360.89

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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.