Home / 1,783.85-2,689.15-1,664.92

Finding the Fourth Proportional to 1,783.85, 2,689.15 and 1,664.92

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Solution

The fourth proportional to 1,783.85, 2,689.15 and 1,664.92 is: 2,509.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,783.85 : 2,689.15 = 1,664.92 : x
  2. Step 2: Convert to fraction form
    1,783.85/2,689.15 = 1,664.92/x
  3. Step 3: Cross multiply
    1,783.85x = 2,689.15 × 1,664.92
  4. Step 4: Simplify right side
    1,783.85x = 4,477,197.85
  5. Step 5: Solve for x
    x = 4,477,197.85/1,783.85
  6. Step 6: Final answer
    x = 2,509.85

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.