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Finding the Fourth Proportional to 2,970.87, 4,453.21 and 995.01

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Solution

The fourth proportional to 2,970.87, 4,453.21 and 995.01 is: 1,491.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,970.87 : 4,453.21 = 995.01 : x
  2. Step 2: Convert to fraction form
    2,970.87/4,453.21 = 995.01/x
  3. Step 3: Cross multiply
    2,970.87x = 4,453.21 × 995.01
  4. Step 4: Simplify right side
    2,970.87x = 4,430,985.55
  5. Step 5: Solve for x
    x = 4,430,985.55/2,970.87
  6. Step 6: Final answer
    x = 1,491.48

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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.