Home / 2,311.03-3,189.63-1,316.13

Finding the Fourth Proportional to 2,311.03, 3,189.63 and 1,316.13

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Solution

The fourth proportional to 2,311.03, 3,189.63 and 1,316.13 is: 1,816.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.03 : 3,189.63 = 1,316.13 : x
  2. Step 2: Convert to fraction form
    2,311.03/3,189.63 = 1,316.13/x
  3. Step 3: Cross multiply
    2,311.03x = 3,189.63 × 1,316.13
  4. Step 4: Simplify right side
    2,311.03x = 4,197,967.73
  5. Step 5: Solve for x
    x = 4,197,967.73/2,311.03
  6. Step 6: Final answer
    x = 1,816.49

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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.