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Finding the Fourth Proportional to 4,478, 6,717.02 and 1,400

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Solution

The fourth proportional to 4,478, 6,717.02 and 1,400 is: 2,100.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,478 : 6,717.02 = 1,400 : x
  2. Step 2: Convert to fraction form
    4,478/6,717.02 = 1,400/x
  3. Step 3: Cross multiply
    4,478x = 6,717.02 × 1,400
  4. Step 4: Simplify right side
    4,478x = 9,403,828
  5. Step 5: Solve for x
    x = 9,403,828/4,478
  6. Step 6: Final answer
    x = 2,100.01

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