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Finding the Fourth Proportional to 5,702.60, 7,868.58 and 3,218.60

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Solution

The fourth proportional to 5,702.60, 7,868.58 and 3,218.60 is: 4,441.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,702.60 : 7,868.58 = 3,218.60 : x
  2. Step 2: Convert to fraction form
    5,702.60/7,868.58 = 3,218.60/x
  3. Step 3: Cross multiply
    5,702.60x = 7,868.58 × 3,218.60
  4. Step 4: Simplify right side
    5,702.60x = 25,325,811.59
  5. Step 5: Solve for x
    x = 25,325,811.59/5,702.60
  6. Step 6: Final answer
    x = 4,441.10

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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.