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Finding the Fourth Proportional to 8,283.58, 11,435.57 and 6,390.91

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Solution

The fourth proportional to 8,283.58, 11,435.57 and 6,390.91 is: 8,822.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,283.58 : 11,435.57 = 6,390.91 : x
  2. Step 2: Convert to fraction form
    8,283.58/11,435.57 = 6,390.91/x
  3. Step 3: Cross multiply
    8,283.58x = 11,435.57 × 6,390.91
  4. Step 4: Simplify right side
    8,283.58x = 73,083,686.06
  5. Step 5: Solve for x
    x = 73,083,686.06/8,283.58
  6. Step 6: Final answer
    x = 8,822.72

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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.