Home / 8,515.18-12,771.30-2,590.63

Finding the Fourth Proportional to 8,515.18, 12,771.30 and 2,590.63

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Solution

The fourth proportional to 8,515.18, 12,771.30 and 2,590.63 is: 3,885.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,515.18 : 12,771.30 = 2,590.63 : x
  2. Step 2: Convert to fraction form
    8,515.18/12,771.30 = 2,590.63/x
  3. Step 3: Cross multiply
    8,515.18x = 12,771.30 × 2,590.63
  4. Step 4: Simplify right side
    8,515.18x = 33,085,724.58
  5. Step 5: Solve for x
    x = 33,085,724.58/8,515.18
  6. Step 6: Final answer
    x = 3,885.50

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Double scale
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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.