Home / 2,885.11-3,980.06-1,889.95

Finding the Fourth Proportional to 2,885.11, 3,980.06 and 1,889.95

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Solution

The fourth proportional to 2,885.11, 3,980.06 and 1,889.95 is: 2,607.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,885.11 : 3,980.06 = 1,889.95 : x
  2. Step 2: Convert to fraction form
    2,885.11/3,980.06 = 1,889.95/x
  3. Step 3: Cross multiply
    2,885.11x = 3,980.06 × 1,889.95
  4. Step 4: Simplify right side
    2,885.11x = 7,522,114.40
  5. Step 5: Solve for x
    x = 7,522,114.40/2,885.11
  6. Step 6: Final answer
    x = 2,607.22

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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.