Home / 5,726.40-8,589.60-5,121.60

Finding the Fourth Proportional to 5,726.40, 8,589.60 and 5,121.60

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Solution

The fourth proportional to 5,726.40, 8,589.60 and 5,121.60 is: 7,682.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,726.40 : 8,589.60 = 5,121.60 : x
  2. Step 2: Convert to fraction form
    5,726.40/8,589.60 = 5,121.60/x
  3. Step 3: Cross multiply
    5,726.40x = 8,589.60 × 5,121.60
  4. Step 4: Simplify right side
    5,726.40x = 43,992,495.36
  5. Step 5: Solve for x
    x = 43,992,495.36/5,726.40
  6. Step 6: Final answer
    x = 7,682.40

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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.