Home / 3,130.70-4,695.30-1,811.60

Finding the Fourth Proportional to 3,130.70, 4,695.30 and 1,811.60

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Solution

The fourth proportional to 3,130.70, 4,695.30 and 1,811.60 is: 2,716.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.70 : 4,695.30 = 1,811.60 : x
  2. Step 2: Convert to fraction form
    3,130.70/4,695.30 = 1,811.60/x
  3. Step 3: Cross multiply
    3,130.70x = 4,695.30 × 1,811.60
  4. Step 4: Simplify right side
    3,130.70x = 8,506,005.48
  5. Step 5: Solve for x
    x = 8,506,005.48/3,130.70
  6. Step 6: Final answer
    x = 2,716.97

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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.