Home / 5,013.80-6,919.28-2,889.64

Finding the Fourth Proportional to 5,013.80, 6,919.28 and 2,889.64

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Solution

The fourth proportional to 5,013.80, 6,919.28 and 2,889.64 is: 3,987.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,013.80 : 6,919.28 = 2,889.64 : x
  2. Step 2: Convert to fraction form
    5,013.80/6,919.28 = 2,889.64/x
  3. Step 3: Cross multiply
    5,013.80x = 6,919.28 × 2,889.64
  4. Step 4: Simplify right side
    5,013.80x = 19,994,233.30
  5. Step 5: Solve for x
    x = 19,994,233.30/5,013.80
  6. Step 6: Final answer
    x = 3,987.84

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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.