Home / 3,785.83-5,678.38-1,188.31

Finding the Fourth Proportional to 3,785.83, 5,678.38 and 1,188.31

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Solution

The fourth proportional to 3,785.83, 5,678.38 and 1,188.31 is: 1,782.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.83 : 5,678.38 = 1,188.31 : x
  2. Step 2: Convert to fraction form
    3,785.83/5,678.38 = 1,188.31/x
  3. Step 3: Cross multiply
    3,785.83x = 5,678.38 × 1,188.31
  4. Step 4: Simplify right side
    3,785.83x = 6,747,675.74
  5. Step 5: Solve for x
    x = 6,747,675.74/3,785.83
  6. Step 6: Final answer
    x = 1,782.35

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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.