Home / 8,431.23-12,645.74-2,587.35

Finding the Fourth Proportional to 8,431.23, 12,645.74 and 2,587.35

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Solution

The fourth proportional to 8,431.23, 12,645.74 and 2,587.35 is: 3,880.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.23 : 12,645.74 = 2,587.35 : x
  2. Step 2: Convert to fraction form
    8,431.23/12,645.74 = 2,587.35/x
  3. Step 3: Cross multiply
    8,431.23x = 12,645.74 × 2,587.35
  4. Step 4: Simplify right side
    8,431.23x = 32,718,942.45
  5. Step 5: Solve for x
    x = 32,718,942.45/8,431.23
  6. Step 6: Final answer
    x = 3,880.68

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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.