Home / 8,450.86-11,651.57-5,420.63

Finding the Fourth Proportional to 8,450.86, 11,651.57 and 5,420.63

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Solution

The fourth proportional to 8,450.86, 11,651.57 and 5,420.63 is: 7,473.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,450.86 : 11,651.57 = 5,420.63 : x
  2. Step 2: Convert to fraction form
    8,450.86/11,651.57 = 5,420.63/x
  3. Step 3: Cross multiply
    8,450.86x = 11,651.57 × 5,420.63
  4. Step 4: Simplify right side
    8,450.86x = 63,158,795.84
  5. Step 5: Solve for x
    x = 63,158,795.84/8,450.86
  6. Step 6: Final answer
    x = 7,473.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.