Home / 6,615.32-9,127.70-3,819.20

Finding the Fourth Proportional to 6,615.32, 9,127.70 and 3,819.20

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Solution

The fourth proportional to 6,615.32, 9,127.70 and 3,819.20 is: 5,269.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,615.32 : 9,127.70 = 3,819.20 : x
  2. Step 2: Convert to fraction form
    6,615.32/9,127.70 = 3,819.20/x
  3. Step 3: Cross multiply
    6,615.32x = 9,127.70 × 3,819.20
  4. Step 4: Simplify right side
    6,615.32x = 34,860,447.11
  5. Step 5: Solve for x
    x = 34,860,447.11/6,615.32
  6. Step 6: Final answer
    x = 5,269.66

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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.