Home / 1,938.87-2,675.65-1,054.68

Finding the Fourth Proportional to 1,938.87, 2,675.65 and 1,054.68

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Solution

The fourth proportional to 1,938.87, 2,675.65 and 1,054.68 is: 1,455.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.87 : 2,675.65 = 1,054.68 : x
  2. Step 2: Convert to fraction form
    1,938.87/2,675.65 = 1,054.68/x
  3. Step 3: Cross multiply
    1,938.87x = 2,675.65 × 1,054.68
  4. Step 4: Simplify right side
    1,938.87x = 2,821,943.85
  5. Step 5: Solve for x
    x = 2,821,943.85/1,938.87
  6. Step 6: Final answer
    x = 1,455.46

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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.