Home / 3,113.88-4,298.30-1,919.06

Finding the Fourth Proportional to 3,113.88, 4,298.30 and 1,919.06

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Solution

The fourth proportional to 3,113.88, 4,298.30 and 1,919.06 is: 2,649.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,113.88 : 4,298.30 = 1,919.06 : x
  2. Step 2: Convert to fraction form
    3,113.88/4,298.30 = 1,919.06/x
  3. Step 3: Cross multiply
    3,113.88x = 4,298.30 × 1,919.06
  4. Step 4: Simplify right side
    3,113.88x = 8,248,687.83
  5. Step 5: Solve for x
    x = 8,248,687.83/3,113.88
  6. Step 6: Final answer
    x = 2,649.01

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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.