Home / 1,779.86-2,669.82-625.64

Finding the Fourth Proportional to 1,779.86, 2,669.82 and 625.64

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Solution

The fourth proportional to 1,779.86, 2,669.82 and 625.64 is: 938.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,779.86 : 2,669.82 = 625.64 : x
  2. Step 2: Convert to fraction form
    1,779.86/2,669.82 = 625.64/x
  3. Step 3: Cross multiply
    1,779.86x = 2,669.82 × 625.64
  4. Step 4: Simplify right side
    1,779.86x = 1,670,346.18
  5. Step 5: Solve for x
    x = 1,670,346.18/1,779.86
  6. Step 6: Final answer
    x = 938.47

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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.