Home / 1,779.12-2,669.32-625.04

Finding the Fourth Proportional to 1,779.12, 2,669.32 and 625.04

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Solution

The fourth proportional to 1,779.12, 2,669.32 and 625.04 is: 937.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,779.12 : 2,669.32 = 625.04 : x
  2. Step 2: Convert to fraction form
    1,779.12/2,669.32 = 625.04/x
  3. Step 3: Cross multiply
    1,779.12x = 2,669.32 × 625.04
  4. Step 4: Simplify right side
    1,779.12x = 1,668,431.77
  5. Step 5: Solve for x
    x = 1,668,431.77/1,779.12
  6. Step 6: Final answer
    x = 937.78

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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.