Home / 1,908.40-2,627.76-1,436.98

Finding the Fourth Proportional to 1,908.40, 2,627.76 and 1,436.98

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Solution

The fourth proportional to 1,908.40, 2,627.76 and 1,436.98 is: 1,978.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,908.40 : 2,627.76 = 1,436.98 : x
  2. Step 2: Convert to fraction form
    1,908.40/2,627.76 = 1,436.98/x
  3. Step 3: Cross multiply
    1,908.40x = 2,627.76 × 1,436.98
  4. Step 4: Simplify right side
    1,908.40x = 3,776,038.56
  5. Step 5: Solve for x
    x = 3,776,038.56/1,908.40
  6. Step 6: Final answer
    x = 1,978.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.