Home / 8,628.40-11,897.86-6,634.56

Finding the Fourth Proportional to 8,628.40, 11,897.86 and 6,634.56

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Solution

The fourth proportional to 8,628.40, 11,897.86 and 6,634.56 is: 9,148.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.40 : 11,897.86 = 6,634.56 : x
  2. Step 2: Convert to fraction form
    8,628.40/11,897.86 = 6,634.56/x
  3. Step 3: Cross multiply
    8,628.40x = 11,897.86 × 6,634.56
  4. Step 4: Simplify right side
    8,628.40x = 78,937,066.04
  5. Step 5: Solve for x
    x = 78,937,066.04/8,628.40
  6. Step 6: Final answer
    x = 9,148.52

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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.