Home / 2,311.02-3,189.24-1,316.30

Finding the Fourth Proportional to 2,311.02, 3,189.24 and 1,316.30

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Solution

The fourth proportional to 2,311.02, 3,189.24 and 1,316.30 is: 1,816.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.02 : 3,189.24 = 1,316.30 : x
  2. Step 2: Convert to fraction form
    2,311.02/3,189.24 = 1,316.30/x
  3. Step 3: Cross multiply
    2,311.02x = 3,189.24 × 1,316.30
  4. Step 4: Simplify right side
    2,311.02x = 4,197,980.67
  5. Step 5: Solve for x
    x = 4,197,980.67/2,311.02
  6. Step 6: Final answer
    x = 1,816.51

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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.