Home / 8,420.23-12,630.38-2,576.82

Finding the Fourth Proportional to 8,420.23, 12,630.38 and 2,576.82

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Solution

The fourth proportional to 8,420.23, 12,630.38 and 2,576.82 is: 3,865.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420.23 : 12,630.38 = 2,576.82 : x
  2. Step 2: Convert to fraction form
    8,420.23/12,630.38 = 2,576.82/x
  3. Step 3: Cross multiply
    8,420.23x = 12,630.38 × 2,576.82
  4. Step 4: Simplify right side
    8,420.23x = 32,546,215.79
  5. Step 5: Solve for x
    x = 32,546,215.79/8,420.23
  6. Step 6: Final answer
    x = 3,865.24

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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.