Home / 2,690.80-3,712.97-1,556.66

Finding the Fourth Proportional to 2,690.80, 3,712.97 and 1,556.66

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Solution

The fourth proportional to 2,690.80, 3,712.97 and 1,556.66 is: 2,148.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.80 : 3,712.97 = 1,556.66 : x
  2. Step 2: Convert to fraction form
    2,690.80/3,712.97 = 1,556.66/x
  3. Step 3: Cross multiply
    2,690.80x = 3,712.97 × 1,556.66
  4. Step 4: Simplify right side
    2,690.80x = 5,779,824.10
  5. Step 5: Solve for x
    x = 5,779,824.10/2,690.80
  6. Step 6: Final answer
    x = 2,148.00

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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.