Home / 2,779.68-3,835.88-1,660.36

Finding the Fourth Proportional to 2,779.68, 3,835.88 and 1,660.36

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Solution

The fourth proportional to 2,779.68, 3,835.88 and 1,660.36 is: 2,291.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,779.68 : 3,835.88 = 1,660.36 : x
  2. Step 2: Convert to fraction form
    2,779.68/3,835.88 = 1,660.36/x
  3. Step 3: Cross multiply
    2,779.68x = 3,835.88 × 1,660.36
  4. Step 4: Simplify right side
    2,779.68x = 6,368,941.72
  5. Step 5: Solve for x
    x = 6,368,941.72/2,779.68
  6. Step 6: Final answer
    x = 2,291.25

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1.5x scale

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.