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Finding the Fourth Proportional to 2,681.37, 4,021.72 and 832.45

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Solution

The fourth proportional to 2,681.37, 4,021.72 and 832.45 is: 1,248.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,681.37 : 4,021.72 = 832.45 : x
  2. Step 2: Convert to fraction form
    2,681.37/4,021.72 = 832.45/x
  3. Step 3: Cross multiply
    2,681.37x = 4,021.72 × 832.45
  4. Step 4: Simplify right side
    2,681.37x = 3,347,880.81
  5. Step 5: Solve for x
    x = 3,347,880.81/2,681.37
  6. Step 6: Final answer
    x = 1,248.57

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1.5x scale

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.