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Finding the Fourth Proportional to 3,986.92, 5,980.98 and 2,038.46

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Solution

The fourth proportional to 3,986.92, 5,980.98 and 2,038.46 is: 3,058.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986.92 : 5,980.98 = 2,038.46 : x
  2. Step 2: Convert to fraction form
    3,986.92/5,980.98 = 2,038.46/x
  3. Step 3: Cross multiply
    3,986.92x = 5,980.98 × 2,038.46
  4. Step 4: Simplify right side
    3,986.92x = 12,191,988.49
  5. Step 5: Solve for x
    x = 12,191,988.49/3,986.92
  6. Step 6: Final answer
    x = 3,058.00

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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.