Home / 8,689.86-13,026.96-3,423.60

Finding the Fourth Proportional to 8,689.86, 13,026.96 and 3,423.60

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Solution

The fourth proportional to 8,689.86, 13,026.96 and 3,423.60 is: 5,132.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,689.86 : 13,026.96 = 3,423.60 : x
  2. Step 2: Convert to fraction form
    8,689.86/13,026.96 = 3,423.60/x
  3. Step 3: Cross multiply
    8,689.86x = 13,026.96 × 3,423.60
  4. Step 4: Simplify right side
    8,689.86x = 44,599,100.26
  5. Step 5: Solve for x
    x = 44,599,100.26/8,689.86
  6. Step 6: Final answer
    x = 5,132.32

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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.