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Finding the Fourth Proportional to 2,703.16, 4,054.78 and 755.40

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Solution

The fourth proportional to 2,703.16, 4,054.78 and 755.40 is: 1,133.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,703.16 : 4,054.78 = 755.40 : x
  2. Step 2: Convert to fraction form
    2,703.16/4,054.78 = 755.40/x
  3. Step 3: Cross multiply
    2,703.16x = 4,054.78 × 755.40
  4. Step 4: Simplify right side
    2,703.16x = 3,062,980.81
  5. Step 5: Solve for x
    x = 3,062,980.81/2,703.16
  6. Step 6: Final answer
    x = 1,133.11

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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.