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Finding the Fourth Proportional to 2,492.40, 3,738.60 and 761.04

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Solution

The fourth proportional to 2,492.40, 3,738.60 and 761.04 is: 1,141.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,492.40 : 3,738.60 = 761.04 : x
  2. Step 2: Convert to fraction form
    2,492.40/3,738.60 = 761.04/x
  3. Step 3: Cross multiply
    2,492.40x = 3,738.60 × 761.04
  4. Step 4: Simplify right side
    2,492.40x = 2,845,224.14
  5. Step 5: Solve for x
    x = 2,845,224.14/2,492.40
  6. Step 6: Final answer
    x = 1,141.56

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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.