Home / 5,785.40-8,679.30-1,890.10

Finding the Fourth Proportional to 5,785.40, 8,679.30 and 1,890.10

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Solution

The fourth proportional to 5,785.40, 8,679.30 and 1,890.10 is: 2,835.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,785.40 : 8,679.30 = 1,890.10 : x
  2. Step 2: Convert to fraction form
    5,785.40/8,679.30 = 1,890.10/x
  3. Step 3: Cross multiply
    5,785.40x = 8,679.30 × 1,890.10
  4. Step 4: Simplify right side
    5,785.40x = 16,404,744.93
  5. Step 5: Solve for x
    x = 16,404,744.93/5,785.40
  6. Step 6: Final answer
    x = 2,835.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.