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Finding the Fourth Proportional to 2,803.98, 4,205.98 and 955.30

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Solution

The fourth proportional to 2,803.98, 4,205.98 and 955.30 is: 1,432.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,803.98 : 4,205.98 = 955.30 : x
  2. Step 2: Convert to fraction form
    2,803.98/4,205.98 = 955.30/x
  3. Step 3: Cross multiply
    2,803.98x = 4,205.98 × 955.30
  4. Step 4: Simplify right side
    2,803.98x = 4,017,972.69
  5. Step 5: Solve for x
    x = 4,017,972.69/2,803.98
  6. Step 6: Final answer
    x = 1,432.95

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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.