Home / 3,313.40-4,970.10-3,171.20

Finding the Fourth Proportional to 3,313.40, 4,970.10 and 3,171.20

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Solution

The fourth proportional to 3,313.40, 4,970.10 and 3,171.20 is: 4,756.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,313.40 : 4,970.10 = 3,171.20 : x
  2. Step 2: Convert to fraction form
    3,313.40/4,970.10 = 3,171.20/x
  3. Step 3: Cross multiply
    3,313.40x = 4,970.10 × 3,171.20
  4. Step 4: Simplify right side
    3,313.40x = 15,761,181.12
  5. Step 5: Solve for x
    x = 15,761,181.12/3,313.40
  6. Step 6: Final answer
    x = 4,756.80

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1.5x scale

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.