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Finding the Fourth Proportional to 2,740.41, 4,108.52 and 890.40

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Solution

The fourth proportional to 2,740.41, 4,108.52 and 890.40 is: 1,334.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,740.41 : 4,108.52 = 890.40 : x
  2. Step 2: Convert to fraction form
    2,740.41/4,108.52 = 890.40/x
  3. Step 3: Cross multiply
    2,740.41x = 4,108.52 × 890.40
  4. Step 4: Simplify right side
    2,740.41x = 3,658,226.21
  5. Step 5: Solve for x
    x = 3,658,226.21/2,740.41
  6. Step 6: Final answer
    x = 1,334.92

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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.