Home / 3,480.03-5,219.91-1,287.77

Finding the Fourth Proportional to 3,480.03, 5,219.91 and 1,287.77

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Solution

The fourth proportional to 3,480.03, 5,219.91 and 1,287.77 is: 1,931.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.03 : 5,219.91 = 1,287.77 : x
  2. Step 2: Convert to fraction form
    3,480.03/5,219.91 = 1,287.77/x
  3. Step 3: Cross multiply
    3,480.03x = 5,219.91 × 1,287.77
  4. Step 4: Simplify right side
    3,480.03x = 6,722,017.40
  5. Step 5: Solve for x
    x = 6,722,017.40/3,480.03
  6. Step 6: Final answer
    x = 1,931.60

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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.