Home / 2,077.71-2,867.51-1,291.86

Finding the Fourth Proportional to 2,077.71, 2,867.51 and 1,291.86

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Solution

The fourth proportional to 2,077.71, 2,867.51 and 1,291.86 is: 1,782.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,077.71 : 2,867.51 = 1,291.86 : x
  2. Step 2: Convert to fraction form
    2,077.71/2,867.51 = 1,291.86/x
  3. Step 3: Cross multiply
    2,077.71x = 2,867.51 × 1,291.86
  4. Step 4: Simplify right side
    2,077.71x = 3,704,415.01
  5. Step 5: Solve for x
    x = 3,704,415.01/2,077.71
  6. Step 6: Final answer
    x = 1,782.93

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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.