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Finding the Fourth Proportional to 4,697.50, 7,048.68 and 2,389

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Solution

The fourth proportional to 4,697.50, 7,048.68 and 2,389 is: 3,584.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,697.50 : 7,048.68 = 2,389 : x
  2. Step 2: Convert to fraction form
    4,697.50/7,048.68 = 2,389/x
  3. Step 3: Cross multiply
    4,697.50x = 7,048.68 × 2,389
  4. Step 4: Simplify right side
    4,697.50x = 16,839,296.52
  5. Step 5: Solve for x
    x = 16,839,296.52/4,697.50
  6. Step 6: Final answer
    x = 3,584.74

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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.