Home / 2,015.70-2,779.80-1,269.42

Finding the Fourth Proportional to 2,015.70, 2,779.80 and 1,269.42

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Solution

The fourth proportional to 2,015.70, 2,779.80 and 1,269.42 is: 1,750.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.70 : 2,779.80 = 1,269.42 : x
  2. Step 2: Convert to fraction form
    2,015.70/2,779.80 = 1,269.42/x
  3. Step 3: Cross multiply
    2,015.70x = 2,779.80 × 1,269.42
  4. Step 4: Simplify right side
    2,015.70x = 3,528,733.72
  5. Step 5: Solve for x
    x = 3,528,733.72/2,015.70
  6. Step 6: Final answer
    x = 1,750.62

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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.