Home / 2,785.50-4,178.30-1,303.90

Finding the Fourth Proportional to 2,785.50, 4,178.30 and 1,303.90

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Solution

The fourth proportional to 2,785.50, 4,178.30 and 1,303.90 is: 1,955.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,785.50 : 4,178.30 = 1,303.90 : x
  2. Step 2: Convert to fraction form
    2,785.50/4,178.30 = 1,303.90/x
  3. Step 3: Cross multiply
    2,785.50x = 4,178.30 × 1,303.90
  4. Step 4: Simplify right side
    2,785.50x = 5,448,085.37
  5. Step 5: Solve for x
    x = 5,448,085.37/2,785.50
  6. Step 6: Final answer
    x = 1,955.87

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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.