Home / 2,783.94-4,175.90-1,139.32

Finding the Fourth Proportional to 2,783.94, 4,175.90 and 1,139.32

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Solution

The fourth proportional to 2,783.94, 4,175.90 and 1,139.32 is: 1,708.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,783.94 : 4,175.90 = 1,139.32 : x
  2. Step 2: Convert to fraction form
    2,783.94/4,175.90 = 1,139.32/x
  3. Step 3: Cross multiply
    2,783.94x = 4,175.90 × 1,139.32
  4. Step 4: Simplify right side
    2,783.94x = 4,757,686.39
  5. Step 5: Solve for x
    x = 4,757,686.39/2,783.94
  6. Step 6: Final answer
    x = 1,708.98

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1.5x scale

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.