Home / 1,863.93-2,572.80-1,200.78

Finding the Fourth Proportional to 1,863.93, 2,572.80 and 1,200.78

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Solution

The fourth proportional to 1,863.93, 2,572.80 and 1,200.78 is: 1,657.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,863.93 : 2,572.80 = 1,200.78 : x
  2. Step 2: Convert to fraction form
    1,863.93/2,572.80 = 1,200.78/x
  3. Step 3: Cross multiply
    1,863.93x = 2,572.80 × 1,200.78
  4. Step 4: Simplify right side
    1,863.93x = 3,089,366.78
  5. Step 5: Solve for x
    x = 3,089,366.78/1,863.93
  6. Step 6: Final answer
    x = 1,657.45

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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.