Home / 7,777.90-10,734.60-4,420

Finding the Fourth Proportional to 7,777.90, 10,734.60 and 4,420

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Solution

The fourth proportional to 7,777.90, 10,734.60 and 4,420 is: 6,100.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,777.90 : 10,734.60 = 4,420 : x
  2. Step 2: Convert to fraction form
    7,777.90/10,734.60 = 4,420/x
  3. Step 3: Cross multiply
    7,777.90x = 10,734.60 × 4,420
  4. Step 4: Simplify right side
    7,777.90x = 47,446,932
  5. Step 5: Solve for x
    x = 47,446,932/7,777.90
  6. Step 6: Final answer
    x = 6,100.22

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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.