Home / 1,938.81-2,675.61-1,054.68

Finding the Fourth Proportional to 1,938.81, 2,675.61 and 1,054.68

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Solution

The fourth proportional to 1,938.81, 2,675.61 and 1,054.68 is: 1,455.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.81 : 2,675.61 = 1,054.68 : x
  2. Step 2: Convert to fraction form
    1,938.81/2,675.61 = 1,054.68/x
  3. Step 3: Cross multiply
    1,938.81x = 2,675.61 × 1,054.68
  4. Step 4: Simplify right side
    1,938.81x = 2,821,898.98
  5. Step 5: Solve for x
    x = 2,821,898.98/1,938.81
  6. Step 6: Final answer
    x = 1,455.48

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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.