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Finding the Fourth Proportional to 1,938.07, 2,905.08 and 949.53

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Solution

The fourth proportional to 1,938.07, 2,905.08 and 949.53 is: 1,423.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.07 : 2,905.08 = 949.53 : x
  2. Step 2: Convert to fraction form
    1,938.07/2,905.08 = 949.53/x
  3. Step 3: Cross multiply
    1,938.07x = 2,905.08 × 949.53
  4. Step 4: Simplify right side
    1,938.07x = 2,758,460.61
  5. Step 5: Solve for x
    x = 2,758,460.61/1,938.07
  6. Step 6: Final answer
    x = 1,423.30

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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.