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Finding the Fourth Proportional to 3,091.77, 4,637.65 and 751.76

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Solution

The fourth proportional to 3,091.77, 4,637.65 and 751.76 is: 1,127.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,091.77 : 4,637.65 = 751.76 : x
  2. Step 2: Convert to fraction form
    3,091.77/4,637.65 = 751.76/x
  3. Step 3: Cross multiply
    3,091.77x = 4,637.65 × 751.76
  4. Step 4: Simplify right side
    3,091.77x = 3,486,378.34
  5. Step 5: Solve for x
    x = 3,486,378.34/3,091.77
  6. Step 6: Final answer
    x = 1,127.63

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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.