Home / 4,985.86-7,478.19-2,650.63

Finding the Fourth Proportional to 4,985.86, 7,478.19 and 2,650.63

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Solution

The fourth proportional to 4,985.86, 7,478.19 and 2,650.63 is: 3,975.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.86 : 7,478.19 = 2,650.63 : x
  2. Step 2: Convert to fraction form
    4,985.86/7,478.19 = 2,650.63/x
  3. Step 3: Cross multiply
    4,985.86x = 7,478.19 × 2,650.63
  4. Step 4: Simplify right side
    4,985.86x = 19,821,914.76
  5. Step 5: Solve for x
    x = 19,821,914.76/4,985.86
  6. Step 6: Final answer
    x = 3,975.63

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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.