Home / 2,311.02-3,188.88-1,316.34

Finding the Fourth Proportional to 2,311.02, 3,188.88 and 1,316.34

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Solution

The fourth proportional to 2,311.02, 3,188.88 and 1,316.34 is: 1,816.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.02 : 3,188.88 = 1,316.34 : x
  2. Step 2: Convert to fraction form
    2,311.02/3,188.88 = 1,316.34/x
  3. Step 3: Cross multiply
    2,311.02x = 3,188.88 × 1,316.34
  4. Step 4: Simplify right side
    2,311.02x = 4,197,650.30
  5. Step 5: Solve for x
    x = 4,197,650.30/2,311.02
  6. Step 6: Final answer
    x = 1,816.36

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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.