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Finding the Fourth Proportional to 1,852.71, 2,780.16 and 757.09

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Solution

The fourth proportional to 1,852.71, 2,780.16 and 757.09 is: 1,136.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,852.71 : 2,780.16 = 757.09 : x
  2. Step 2: Convert to fraction form
    1,852.71/2,780.16 = 757.09/x
  3. Step 3: Cross multiply
    1,852.71x = 2,780.16 × 757.09
  4. Step 4: Simplify right side
    1,852.71x = 2,104,831.33
  5. Step 5: Solve for x
    x = 2,104,831.33/1,852.71
  6. Step 6: Final answer
    x = 1,136.08

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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.