Home / 8,986.56-12,399.76-6,828.72

Finding the Fourth Proportional to 8,986.56, 12,399.76 and 6,828.72

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Solution

The fourth proportional to 8,986.56, 12,399.76 and 6,828.72 is: 9,422.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,986.56 : 12,399.76 = 6,828.72 : x
  2. Step 2: Convert to fraction form
    8,986.56/12,399.76 = 6,828.72/x
  3. Step 3: Cross multiply
    8,986.56x = 12,399.76 × 6,828.72
  4. Step 4: Simplify right side
    8,986.56x = 84,674,489.11
  5. Step 5: Solve for x
    x = 84,674,489.11/8,986.56
  6. Step 6: Final answer
    x = 9,422.35

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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.