Home / 3,987.77-5,503.14-2,219.37

Finding the Fourth Proportional to 3,987.77, 5,503.14 and 2,219.37

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Solution

The fourth proportional to 3,987.77, 5,503.14 and 2,219.37 is: 3,062.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.77 : 5,503.14 = 2,219.37 : x
  2. Step 2: Convert to fraction form
    3,987.77/5,503.14 = 2,219.37/x
  3. Step 3: Cross multiply
    3,987.77x = 5,503.14 × 2,219.37
  4. Step 4: Simplify right side
    3,987.77x = 12,213,483.19
  5. Step 5: Solve for x
    x = 12,213,483.19/3,987.77
  6. Step 6: Final answer
    x = 3,062.74

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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.