Home / 6,986.48-9,642.84-4,002.80

Finding the Fourth Proportional to 6,986.48, 9,642.84 and 4,002.80

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Solution

The fourth proportional to 6,986.48, 9,642.84 and 4,002.80 is: 5,524.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,986.48 : 9,642.84 = 4,002.80 : x
  2. Step 2: Convert to fraction form
    6,986.48/9,642.84 = 4,002.80/x
  3. Step 3: Cross multiply
    6,986.48x = 9,642.84 × 4,002.80
  4. Step 4: Simplify right side
    6,986.48x = 38,598,359.95
  5. Step 5: Solve for x
    x = 38,598,359.95/6,986.48
  6. Step 6: Final answer
    x = 5,524.72

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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.