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Finding the Fourth Proportional to 8,702.58, 12,003.41 and 5,347.28

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Solution

The fourth proportional to 8,702.58, 12,003.41 and 5,347.28 is: 7,375.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,702.58 : 12,003.41 = 5,347.28 : x
  2. Step 2: Convert to fraction form
    8,702.58/12,003.41 = 5,347.28/x
  3. Step 3: Cross multiply
    8,702.58x = 12,003.41 × 5,347.28
  4. Step 4: Simplify right side
    8,702.58x = 64,185,637.60
  5. Step 5: Solve for x
    x = 64,185,637.60/8,702.58
  6. Step 6: Final answer
    x = 7,375.47

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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.