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Finding the Fourth Proportional to 3,480.71, 4,803.12 and 1,908.81

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Solution

The fourth proportional to 3,480.71, 4,803.12 and 1,908.81 is: 2,634.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.71 : 4,803.12 = 1,908.81 : x
  2. Step 2: Convert to fraction form
    3,480.71/4,803.12 = 1,908.81/x
  3. Step 3: Cross multiply
    3,480.71x = 4,803.12 × 1,908.81
  4. Step 4: Simplify right side
    3,480.71x = 9,168,243.49
  5. Step 5: Solve for x
    x = 9,168,243.49/3,480.71
  6. Step 6: Final answer
    x = 2,634.01

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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.