Home / 1,779.18-2,455.82-1,219.42

Finding the Fourth Proportional to 1,779.18, 2,455.82 and 1,219.42

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Solution

The fourth proportional to 1,779.18, 2,455.82 and 1,219.42 is: 1,683.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,779.18 : 2,455.82 = 1,219.42 : x
  2. Step 2: Convert to fraction form
    1,779.18/2,455.82 = 1,219.42/x
  3. Step 3: Cross multiply
    1,779.18x = 2,455.82 × 1,219.42
  4. Step 4: Simplify right side
    1,779.18x = 2,994,676.02
  5. Step 5: Solve for x
    x = 2,994,676.02/1,779.18
  6. Step 6: Final answer
    x = 1,683.18

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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.