Home / 1,838.19-2,756.34-742.26

Finding the Fourth Proportional to 1,838.19, 2,756.34 and 742.26

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Solution

The fourth proportional to 1,838.19, 2,756.34 and 742.26 is: 1,113.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,838.19 : 2,756.34 = 742.26 : x
  2. Step 2: Convert to fraction form
    1,838.19/2,756.34 = 742.26/x
  3. Step 3: Cross multiply
    1,838.19x = 2,756.34 × 742.26
  4. Step 4: Simplify right side
    1,838.19x = 2,045,920.93
  5. Step 5: Solve for x
    x = 2,045,920.93/1,838.19
  6. Step 6: Final answer
    x = 1,113.01

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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.