Home / 6,986.30-9,638.36-4,000.54

Finding the Fourth Proportional to 6,986.30, 9,638.36 and 4,000.54

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Solution

The fourth proportional to 6,986.30, 9,638.36 and 4,000.54 is: 5,519.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,986.30 : 9,638.36 = 4,000.54 : x
  2. Step 2: Convert to fraction form
    6,986.30/9,638.36 = 4,000.54/x
  3. Step 3: Cross multiply
    6,986.30x = 9,638.36 × 4,000.54
  4. Step 4: Simplify right side
    6,986.30x = 38,558,644.71
  5. Step 5: Solve for x
    x = 38,558,644.71/6,986.30
  6. Step 6: Final answer
    x = 5,519.18

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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.