Home / 1,603.85-2,403.80-1,139.12

Finding the Fourth Proportional to 1,603.85, 2,403.80 and 1,139.12

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Solution

The fourth proportional to 1,603.85, 2,403.80 and 1,139.12 is: 1,707.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,603.85 : 2,403.80 = 1,139.12 : x
  2. Step 2: Convert to fraction form
    1,603.85/2,403.80 = 1,139.12/x
  3. Step 3: Cross multiply
    1,603.85x = 2,403.80 × 1,139.12
  4. Step 4: Simplify right side
    1,603.85x = 2,738,207.48
  5. Step 5: Solve for x
    x = 2,738,207.48/1,603.85
  6. Step 6: Final answer
    x = 1,707.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.