Home / 1,779.60-2,669.36-481.07

Finding the Fourth Proportional to 1,779.60, 2,669.36 and 481.07

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Solution

The fourth proportional to 1,779.60, 2,669.36 and 481.07 is: 721.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,779.60 : 2,669.36 = 481.07 : x
  2. Step 2: Convert to fraction form
    1,779.60/2,669.36 = 481.07/x
  3. Step 3: Cross multiply
    1,779.60x = 2,669.36 × 481.07
  4. Step 4: Simplify right side
    1,779.60x = 1,284,153.28
  5. Step 5: Solve for x
    x = 1,284,153.28/1,779.60
  6. Step 6: Final answer
    x = 721.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.