Home / 2,657.09-3,669.45-2,189.63

Finding the Fourth Proportional to 2,657.09, 3,669.45 and 2,189.63

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Solution

The fourth proportional to 2,657.09, 3,669.45 and 2,189.63 is: 3,023.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,657.09 : 3,669.45 = 2,189.63 : x
  2. Step 2: Convert to fraction form
    2,657.09/3,669.45 = 2,189.63/x
  3. Step 3: Cross multiply
    2,657.09x = 3,669.45 × 2,189.63
  4. Step 4: Simplify right side
    2,657.09x = 8,034,737.80
  5. Step 5: Solve for x
    x = 8,034,737.80/2,657.09
  6. Step 6: Final answer
    x = 3,023.89

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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.