Home / 5,685.72-8,530.80-1,790.43

Finding the Fourth Proportional to 5,685.72, 8,530.80 and 1,790.43

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Solution

The fourth proportional to 5,685.72, 8,530.80 and 1,790.43 is: 2,686.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,685.72 : 8,530.80 = 1,790.43 : x
  2. Step 2: Convert to fraction form
    5,685.72/8,530.80 = 1,790.43/x
  3. Step 3: Cross multiply
    5,685.72x = 8,530.80 × 1,790.43
  4. Step 4: Simplify right side
    5,685.72x = 15,273,800.24
  5. Step 5: Solve for x
    x = 15,273,800.24/5,685.72
  6. Step 6: Final answer
    x = 2,686.34

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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.