Home / 2,672.36-3,686.56-1,788.40

Finding the Fourth Proportional to 2,672.36, 3,686.56 and 1,788.40

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Solution

The fourth proportional to 2,672.36, 3,686.56 and 1,788.40 is: 2,467.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,672.36 : 3,686.56 = 1,788.40 : x
  2. Step 2: Convert to fraction form
    2,672.36/3,686.56 = 1,788.40/x
  3. Step 3: Cross multiply
    2,672.36x = 3,686.56 × 1,788.40
  4. Step 4: Simplify right side
    2,672.36x = 6,593,043.90
  5. Step 5: Solve for x
    x = 6,593,043.90/2,672.36
  6. Step 6: Final answer
    x = 2,467.12

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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.