Home / 2,313.49-3,192.69-1,318.99

Finding the Fourth Proportional to 2,313.49, 3,192.69 and 1,318.99

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Solution

The fourth proportional to 2,313.49, 3,192.69 and 1,318.99 is: 1,820.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,313.49 : 3,192.69 = 1,318.99 : x
  2. Step 2: Convert to fraction form
    2,313.49/3,192.69 = 1,318.99/x
  3. Step 3: Cross multiply
    2,313.49x = 3,192.69 × 1,318.99
  4. Step 4: Simplify right side
    2,313.49x = 4,211,126.18
  5. Step 5: Solve for x
    x = 4,211,126.18/2,313.49
  6. Step 6: Final answer
    x = 1,820.25

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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.