Home / 8,415.36-11,634.24-7,089.28

Finding the Fourth Proportional to 8,415.36, 11,634.24 and 7,089.28

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Solution

The fourth proportional to 8,415.36, 11,634.24 and 7,089.28 is: 9,800.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,415.36 : 11,634.24 = 7,089.28 : x
  2. Step 2: Convert to fraction form
    8,415.36/11,634.24 = 7,089.28/x
  3. Step 3: Cross multiply
    8,415.36x = 11,634.24 × 7,089.28
  4. Step 4: Simplify right side
    8,415.36x = 82,478,384.95
  5. Step 5: Solve for x
    x = 82,478,384.95/8,415.36
  6. Step 6: Final answer
    x = 9,800.93

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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.