Home / 2,313.21-3,192.23-1,318.53

Finding the Fourth Proportional to 2,313.21, 3,192.23 and 1,318.53

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Solution

The fourth proportional to 2,313.21, 3,192.23 and 1,318.53 is: 1,819.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,313.21 : 3,192.23 = 1,318.53 : x
  2. Step 2: Convert to fraction form
    2,313.21/3,192.23 = 1,318.53/x
  3. Step 3: Cross multiply
    2,313.21x = 3,192.23 × 1,318.53
  4. Step 4: Simplify right side
    2,313.21x = 4,209,051.02
  5. Step 5: Solve for x
    x = 4,209,051.02/2,313.21
  6. Step 6: Final answer
    x = 1,819.57

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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.