Home / 1,938.76-2,675.48-1,054.55

Finding the Fourth Proportional to 1,938.76, 2,675.48 and 1,054.55

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Solution

The fourth proportional to 1,938.76, 2,675.48 and 1,054.55 is: 1,455.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.76 : 2,675.48 = 1,054.55 : x
  2. Step 2: Convert to fraction form
    1,938.76/2,675.48 = 1,054.55/x
  3. Step 3: Cross multiply
    1,938.76x = 2,675.48 × 1,054.55
  4. Step 4: Simplify right side
    1,938.76x = 2,821,427.43
  5. Step 5: Solve for x
    x = 2,821,427.43/1,938.76
  6. Step 6: Final answer
    x = 1,455.27

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1.5x scale

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.