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Finding the Fourth Proportional to 1,806.10, 2,710.06 and 831.06

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Solution

The fourth proportional to 1,806.10, 2,710.06 and 831.06 is: 1,247.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,806.10 : 2,710.06 = 831.06 : x
  2. Step 2: Convert to fraction form
    1,806.10/2,710.06 = 831.06/x
  3. Step 3: Cross multiply
    1,806.10x = 2,710.06 × 831.06
  4. Step 4: Simplify right side
    1,806.10x = 2,252,220.39
  5. Step 5: Solve for x
    x = 2,252,220.39/1,806.10
  6. Step 6: Final answer
    x = 1,247.01

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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.