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Finding the Fourth Proportional to 7,021.42, 9,702.39 and 6,679.74

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Solution

The fourth proportional to 7,021.42, 9,702.39 and 6,679.74 is: 9,230.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,021.42 : 9,702.39 = 6,679.74 : x
  2. Step 2: Convert to fraction form
    7,021.42/9,702.39 = 6,679.74/x
  3. Step 3: Cross multiply
    7,021.42x = 9,702.39 × 6,679.74
  4. Step 4: Simplify right side
    7,021.42x = 64,809,442.58
  5. Step 5: Solve for x
    x = 64,809,442.58/7,021.42
  6. Step 6: Final answer
    x = 9,230.25

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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.