Home / 1,669.86-2,505.08-615.76

Finding the Fourth Proportional to 1,669.86, 2,505.08 and 615.76

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Solution

The fourth proportional to 1,669.86, 2,505.08 and 615.76 is: 923.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,669.86 : 2,505.08 = 615.76 : x
  2. Step 2: Convert to fraction form
    1,669.86/2,505.08 = 615.76/x
  3. Step 3: Cross multiply
    1,669.86x = 2,505.08 × 615.76
  4. Step 4: Simplify right side
    1,669.86x = 1,542,528.06
  5. Step 5: Solve for x
    x = 1,542,528.06/1,669.86
  6. Step 6: Final answer
    x = 923.75

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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.