Home / 3,261.76-4,892.94-1,312.90

Finding the Fourth Proportional to 3,261.76, 4,892.94 and 1,312.90

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Solution

The fourth proportional to 3,261.76, 4,892.94 and 1,312.90 is: 1,969.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,261.76 : 4,892.94 = 1,312.90 : x
  2. Step 2: Convert to fraction form
    3,261.76/4,892.94 = 1,312.90/x
  3. Step 3: Cross multiply
    3,261.76x = 4,892.94 × 1,312.90
  4. Step 4: Simplify right side
    3,261.76x = 6,423,940.93
  5. Step 5: Solve for x
    x = 6,423,940.93/3,261.76
  6. Step 6: Final answer
    x = 1,969.47

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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.