Home / 2,785.85-4,178.95-1,030.80

Finding the Fourth Proportional to 2,785.85, 4,178.95 and 1,030.80

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Solution

The fourth proportional to 2,785.85, 4,178.95 and 1,030.80 is: 1,546.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,785.85 : 4,178.95 = 1,030.80 : x
  2. Step 2: Convert to fraction form
    2,785.85/4,178.95 = 1,030.80/x
  3. Step 3: Cross multiply
    2,785.85x = 4,178.95 × 1,030.80
  4. Step 4: Simplify right side
    2,785.85x = 4,307,659.08
  5. Step 5: Solve for x
    x = 4,307,659.08/2,785.85
  6. Step 6: Final answer
    x = 1,546.27

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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.