Home / 3,987.48-5,503.08-2,219.48

Finding the Fourth Proportional to 3,987.48, 5,503.08 and 2,219.48

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Solution

The fourth proportional to 3,987.48, 5,503.08 and 2,219.48 is: 3,063.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.48 : 5,503.08 = 2,219.48 : x
  2. Step 2: Convert to fraction form
    3,987.48/5,503.08 = 2,219.48/x
  3. Step 3: Cross multiply
    3,987.48x = 5,503.08 × 2,219.48
  4. Step 4: Simplify right side
    3,987.48x = 12,213,976.00
  5. Step 5: Solve for x
    x = 12,213,976.00/3,987.48
  6. Step 6: Final answer
    x = 3,063.08

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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.