Home / 8,420.25-12,630.53-4,262.22

Finding the Fourth Proportional to 8,420.25, 12,630.53 and 4,262.22

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Solution

The fourth proportional to 8,420.25, 12,630.53 and 4,262.22 is: 6,393.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420.25 : 12,630.53 = 4,262.22 : x
  2. Step 2: Convert to fraction form
    8,420.25/12,630.53 = 4,262.22/x
  3. Step 3: Cross multiply
    8,420.25x = 12,630.53 × 4,262.22
  4. Step 4: Simplify right side
    8,420.25x = 53,834,108.23
  5. Step 5: Solve for x
    x = 53,834,108.23/8,420.25
  6. Step 6: Final answer
    x = 6,393.41

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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.