Home / 8,619.28-11,891.36-5,259.76

Finding the Fourth Proportional to 8,619.28, 11,891.36 and 5,259.76

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Solution

The fourth proportional to 8,619.28, 11,891.36 and 5,259.76 is: 7,256.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.28 : 11,891.36 = 5,259.76 : x
  2. Step 2: Convert to fraction form
    8,619.28/11,891.36 = 5,259.76/x
  3. Step 3: Cross multiply
    8,619.28x = 11,891.36 × 5,259.76
  4. Step 4: Simplify right side
    8,619.28x = 62,545,699.67
  5. Step 5: Solve for x
    x = 62,545,699.67/8,619.28
  6. Step 6: Final answer
    x = 7,256.49

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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.