Home / 3,145.12-4,338.63-1,885.57

Finding the Fourth Proportional to 3,145.12, 4,338.63 and 1,885.57

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Solution

The fourth proportional to 3,145.12, 4,338.63 and 1,885.57 is: 2,601.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.12 : 4,338.63 = 1,885.57 : x
  2. Step 2: Convert to fraction form
    3,145.12/4,338.63 = 1,885.57/x
  3. Step 3: Cross multiply
    3,145.12x = 4,338.63 × 1,885.57
  4. Step 4: Simplify right side
    3,145.12x = 8,180,779.72
  5. Step 5: Solve for x
    x = 8,180,779.72/3,145.12
  6. Step 6: Final answer
    x = 2,601.10

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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.