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Finding the Fourth Proportional to 5,647, 8,470.50 and 1,543

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Solution

The fourth proportional to 5,647, 8,470.50 and 1,543 is: 2,314.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,647 : 8,470.50 = 1,543 : x
  2. Step 2: Convert to fraction form
    5,647/8,470.50 = 1,543/x
  3. Step 3: Cross multiply
    5,647x = 8,470.50 × 1,543
  4. Step 4: Simplify right side
    5,647x = 13,069,981.50
  5. Step 5: Solve for x
    x = 13,069,981.50/5,647
  6. Step 6: Final answer
    x = 2,314.50

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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.