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Finding the Fourth Proportional to 11,702.40, 17,542.80 and 4,302.78

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Solution

The fourth proportional to 11,702.40, 17,542.80 and 4,302.78 is: 6,450.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,702.40 : 17,542.80 = 4,302.78 : x
  2. Step 2: Convert to fraction form
    11,702.40/17,542.80 = 4,302.78/x
  3. Step 3: Cross multiply
    11,702.40x = 17,542.80 × 4,302.78
  4. Step 4: Simplify right side
    11,702.40x = 75,482,808.98
  5. Step 5: Solve for x
    x = 75,482,808.98/11,702.40
  6. Step 6: Final answer
    x = 6,450.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.