Home / 5,686.07-8,531.57-1,990.94

Finding the Fourth Proportional to 5,686.07, 8,531.57 and 1,990.94

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Solution

The fourth proportional to 5,686.07, 8,531.57 and 1,990.94 is: 2,987.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,686.07 : 8,531.57 = 1,990.94 : x
  2. Step 2: Convert to fraction form
    5,686.07/8,531.57 = 1,990.94/x
  3. Step 3: Cross multiply
    5,686.07x = 8,531.57 × 1,990.94
  4. Step 4: Simplify right side
    5,686.07x = 16,985,806.30
  5. Step 5: Solve for x
    x = 16,985,806.30/5,686.07
  6. Step 6: Final answer
    x = 2,987.27

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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.