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Finding the Fourth Proportional to 1,571.68, 2,169.12 and 950.68

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Solution

The fourth proportional to 1,571.68, 2,169.12 and 950.68 is: 1,312.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,571.68 : 2,169.12 = 950.68 : x
  2. Step 2: Convert to fraction form
    1,571.68/2,169.12 = 950.68/x
  3. Step 3: Cross multiply
    1,571.68x = 2,169.12 × 950.68
  4. Step 4: Simplify right side
    1,571.68x = 2,062,139.00
  5. Step 5: Solve for x
    x = 2,062,139.00/1,571.68
  6. Step 6: Final answer
    x = 1,312.06

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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.