Home / 6,290.91-8,680.95-3,638.49

Finding the Fourth Proportional to 6,290.91, 8,680.95 and 3,638.49

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Solution

The fourth proportional to 6,290.91, 8,680.95 and 3,638.49 is: 5,020.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,290.91 : 8,680.95 = 3,638.49 : x
  2. Step 2: Convert to fraction form
    6,290.91/8,680.95 = 3,638.49/x
  3. Step 3: Cross multiply
    6,290.91x = 8,680.95 × 3,638.49
  4. Step 4: Simplify right side
    6,290.91x = 31,585,549.77
  5. Step 5: Solve for x
    x = 31,585,549.77/6,290.91
  6. Step 6: Final answer
    x = 5,020.82

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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.