Home / 8,254.24-11,378.28-6,990.64

Finding the Fourth Proportional to 8,254.24, 11,378.28 and 6,990.64

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Solution

The fourth proportional to 8,254.24, 11,378.28 and 6,990.64 is: 9,636.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,254.24 : 11,378.28 = 6,990.64 : x
  2. Step 2: Convert to fraction form
    8,254.24/11,378.28 = 6,990.64/x
  3. Step 3: Cross multiply
    8,254.24x = 11,378.28 × 6,990.64
  4. Step 4: Simplify right side
    8,254.24x = 79,541,459.30
  5. Step 5: Solve for x
    x = 79,541,459.30/8,254.24
  6. Step 6: Final answer
    x = 9,636.44

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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.