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Finding the Fourth Proportional to 4,756.49, 7,129.93 and 1,984.70

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Solution

The fourth proportional to 4,756.49, 7,129.93 and 1,984.70 is: 2,975.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,756.49 : 7,129.93 = 1,984.70 : x
  2. Step 2: Convert to fraction form
    4,756.49/7,129.93 = 1,984.70/x
  3. Step 3: Cross multiply
    4,756.49x = 7,129.93 × 1,984.70
  4. Step 4: Simplify right side
    4,756.49x = 14,150,772.07
  5. Step 5: Solve for x
    x = 14,150,772.07/4,756.49
  6. Step 6: Final answer
    x = 2,975.05

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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.