Home / 5,641.80-7,785.66-3,157.80

Finding the Fourth Proportional to 5,641.80, 7,785.66 and 3,157.80

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Solution

The fourth proportional to 5,641.80, 7,785.66 and 3,157.80 is: 4,357.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,641.80 : 7,785.66 = 3,157.80 : x
  2. Step 2: Convert to fraction form
    5,641.80/7,785.66 = 3,157.80/x
  3. Step 3: Cross multiply
    5,641.80x = 7,785.66 × 3,157.80
  4. Step 4: Simplify right side
    5,641.80x = 24,585,557.15
  5. Step 5: Solve for x
    x = 24,585,557.15/5,641.80
  6. Step 6: Final answer
    x = 4,357.75

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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.