Home / 6,638.50-9,162.84-3,806.74

Finding the Fourth Proportional to 6,638.50, 9,162.84 and 3,806.74

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Solution

The fourth proportional to 6,638.50, 9,162.84 and 3,806.74 is: 5,254.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,638.50 : 9,162.84 = 3,806.74 : x
  2. Step 2: Convert to fraction form
    6,638.50/9,162.84 = 3,806.74/x
  3. Step 3: Cross multiply
    6,638.50x = 9,162.84 × 3,806.74
  4. Step 4: Simplify right side
    6,638.50x = 34,880,549.54
  5. Step 5: Solve for x
    x = 34,880,549.54/6,638.50
  6. Step 6: Final answer
    x = 5,254.28

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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.