Home / 1,852.11-2,551.80-1,221.52

Finding the Fourth Proportional to 1,852.11, 2,551.80 and 1,221.52

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Solution

The fourth proportional to 1,852.11, 2,551.80 and 1,221.52 is: 1,682.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,852.11 : 2,551.80 = 1,221.52 : x
  2. Step 2: Convert to fraction form
    1,852.11/2,551.80 = 1,221.52/x
  3. Step 3: Cross multiply
    1,852.11x = 2,551.80 × 1,221.52
  4. Step 4: Simplify right side
    1,852.11x = 3,117,077.79
  5. Step 5: Solve for x
    x = 3,117,077.79/1,852.11
  6. Step 6: Final answer
    x = 1,682.99

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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.