Home / 5,685.68-8,525.78-1,987.83

Finding the Fourth Proportional to 5,685.68, 8,525.78 and 1,987.83

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Solution

The fourth proportional to 5,685.68, 8,525.78 and 1,987.83 is: 2,980.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,685.68 : 8,525.78 = 1,987.83 : x
  2. Step 2: Convert to fraction form
    5,685.68/8,525.78 = 1,987.83/x
  3. Step 3: Cross multiply
    5,685.68x = 8,525.78 × 1,987.83
  4. Step 4: Simplify right side
    5,685.68x = 16,947,791.32
  5. Step 5: Solve for x
    x = 16,947,791.32/5,685.68
  6. Step 6: Final answer
    x = 2,980.79

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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.