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Finding the Fourth Proportional to 2,900.84, 4,003.62 and 2,776.28

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Solution

The fourth proportional to 2,900.84, 4,003.62 and 2,776.28 is: 3,831.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,900.84 : 4,003.62 = 2,776.28 : x
  2. Step 2: Convert to fraction form
    2,900.84/4,003.62 = 2,776.28/x
  3. Step 3: Cross multiply
    2,900.84x = 4,003.62 × 2,776.28
  4. Step 4: Simplify right side
    2,900.84x = 11,115,170.13
  5. Step 5: Solve for x
    x = 11,115,170.13/2,900.84
  6. Step 6: Final answer
    x = 3,831.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.