Home / 8,628.86-11,915.30-8,186.00

Finding the Fourth Proportional to 8,628.86, 11,915.30 and 8,186.00

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Solution

The fourth proportional to 8,628.86, 11,915.30 and 8,186.00 is: 11,303.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.86 : 11,915.30 = 8,186.00 : x
  2. Step 2: Convert to fraction form
    8,628.86/11,915.30 = 8,186.00/x
  3. Step 3: Cross multiply
    8,628.86x = 11,915.30 × 8,186.00
  4. Step 4: Simplify right side
    8,628.86x = 97,538,606.69
  5. Step 5: Solve for x
    x = 97,538,606.69/8,628.86
  6. Step 6: Final answer
    x = 11,303.76

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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.