Home / 1,850.93-2,549.49-1,290.40

Finding the Fourth Proportional to 1,850.93, 2,549.49 and 1,290.40

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Solution

The fourth proportional to 1,850.93, 2,549.49 and 1,290.40 is: 1,777.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,850.93 : 2,549.49 = 1,290.40 : x
  2. Step 2: Convert to fraction form
    1,850.93/2,549.49 = 1,290.40/x
  3. Step 3: Cross multiply
    1,850.93x = 2,549.49 × 1,290.40
  4. Step 4: Simplify right side
    1,850.93x = 3,289,849.15
  5. Step 5: Solve for x
    x = 3,289,849.15/1,850.93
  6. Step 6: Final answer
    x = 1,777.40

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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.