Home / 2,176.19-3,001.86-1,291.94

Finding the Fourth Proportional to 2,176.19, 3,001.86 and 1,291.94

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Solution

The fourth proportional to 2,176.19, 3,001.86 and 1,291.94 is: 1,782.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,176.19 : 3,001.86 = 1,291.94 : x
  2. Step 2: Convert to fraction form
    2,176.19/3,001.86 = 1,291.94/x
  3. Step 3: Cross multiply
    2,176.19x = 3,001.86 × 1,291.94
  4. Step 4: Simplify right side
    2,176.19x = 3,878,223.01
  5. Step 5: Solve for x
    x = 3,878,223.01/2,176.19
  6. Step 6: Final answer
    x = 1,782.12

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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.