Home / 8,587.32-12,878.10-3,039.72

Finding the Fourth Proportional to 8,587.32, 12,878.10 and 3,039.72

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Solution

The fourth proportional to 8,587.32, 12,878.10 and 3,039.72 is: 4,558.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,587.32 : 12,878.10 = 3,039.72 : x
  2. Step 2: Convert to fraction form
    8,587.32/12,878.10 = 3,039.72/x
  3. Step 3: Cross multiply
    8,587.32x = 12,878.10 × 3,039.72
  4. Step 4: Simplify right side
    8,587.32x = 39,145,818.13
  5. Step 5: Solve for x
    x = 39,145,818.13/8,587.32
  6. Step 6: Final answer
    x = 4,558.56

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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.