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Finding the Fourth Proportional to 2,621.10, 3,928.16 and 975.99

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Solution

The fourth proportional to 2,621.10, 3,928.16 and 975.99 is: 1,462.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.10 : 3,928.16 = 975.99 : x
  2. Step 2: Convert to fraction form
    2,621.10/3,928.16 = 975.99/x
  3. Step 3: Cross multiply
    2,621.10x = 3,928.16 × 975.99
  4. Step 4: Simplify right side
    2,621.10x = 3,833,840.00
  5. Step 5: Solve for x
    x = 3,833,840.00/2,621.10
  6. Step 6: Final answer
    x = 1,462.68

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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.