Home / 2,311.35-3,189.68-1,303.07

Finding the Fourth Proportional to 2,311.35, 3,189.68 and 1,303.07

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Solution

The fourth proportional to 2,311.35, 3,189.68 and 1,303.07 is: 1,798.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.35 : 3,189.68 = 1,303.07 : x
  2. Step 2: Convert to fraction form
    2,311.35/3,189.68 = 1,303.07/x
  3. Step 3: Cross multiply
    2,311.35x = 3,189.68 × 1,303.07
  4. Step 4: Simplify right side
    2,311.35x = 4,156,376.32
  5. Step 5: Solve for x
    x = 4,156,376.32/2,311.35
  6. Step 6: Final answer
    x = 1,798.25

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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.