Home / 3,143.87-4,338.40-1,885.63

Finding the Fourth Proportional to 3,143.87, 4,338.40 and 1,885.63

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Solution

The fourth proportional to 3,143.87, 4,338.40 and 1,885.63 is: 2,602.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,143.87 : 4,338.40 = 1,885.63 : x
  2. Step 2: Convert to fraction form
    3,143.87/4,338.40 = 1,885.63/x
  3. Step 3: Cross multiply
    3,143.87x = 4,338.40 × 1,885.63
  4. Step 4: Simplify right side
    3,143.87x = 8,180,617.19
  5. Step 5: Solve for x
    x = 8,180,617.19/3,143.87
  6. Step 6: Final answer
    x = 2,602.09

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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.