Home / 2,151.07-2,969.53-1,442.66

Finding the Fourth Proportional to 2,151.07, 2,969.53 and 1,442.66

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Solution

The fourth proportional to 2,151.07, 2,969.53 and 1,442.66 is: 1,991.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.07 : 2,969.53 = 1,442.66 : x
  2. Step 2: Convert to fraction form
    2,151.07/2,969.53 = 1,442.66/x
  3. Step 3: Cross multiply
    2,151.07x = 2,969.53 × 1,442.66
  4. Step 4: Simplify right side
    2,151.07x = 4,284,000.09
  5. Step 5: Solve for x
    x = 4,284,000.09/2,151.07
  6. Step 6: Final answer
    x = 1,991.57

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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.