Home / 2,151.75-2,967.80-1,489.71

Finding the Fourth Proportional to 2,151.75, 2,967.80 and 1,489.71

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Solution

The fourth proportional to 2,151.75, 2,967.80 and 1,489.71 is: 2,054.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.75 : 2,967.80 = 1,489.71 : x
  2. Step 2: Convert to fraction form
    2,151.75/2,967.80 = 1,489.71/x
  3. Step 3: Cross multiply
    2,151.75x = 2,967.80 × 1,489.71
  4. Step 4: Simplify right side
    2,151.75x = 4,421,153.89
  5. Step 5: Solve for x
    x = 4,421,153.89/2,151.75
  6. Step 6: Final answer
    x = 2,054.68

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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.