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Finding the Fourth Proportional to 4,672.40, 6,994.20 and 2,718.80

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Solution

The fourth proportional to 4,672.40, 6,994.20 and 2,718.80 is: 4,069.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,672.40 : 6,994.20 = 2,718.80 : x
  2. Step 2: Convert to fraction form
    4,672.40/6,994.20 = 2,718.80/x
  3. Step 3: Cross multiply
    4,672.40x = 6,994.20 × 2,718.80
  4. Step 4: Simplify right side
    4,672.40x = 19,015,830.96
  5. Step 5: Solve for x
    x = 19,015,830.96/4,672.40
  6. Step 6: Final answer
    x = 4,069.82

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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.