Home / 3,705.70-5,111.76-2,133.49

Finding the Fourth Proportional to 3,705.70, 5,111.76 and 2,133.49

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Solution

The fourth proportional to 3,705.70, 5,111.76 and 2,133.49 is: 2,943.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,705.70 : 5,111.76 = 2,133.49 : x
  2. Step 2: Convert to fraction form
    3,705.70/5,111.76 = 2,133.49/x
  3. Step 3: Cross multiply
    3,705.70x = 5,111.76 × 2,133.49
  4. Step 4: Simplify right side
    3,705.70x = 10,905,888.84
  5. Step 5: Solve for x
    x = 10,905,888.84/3,705.70
  6. Step 6: Final answer
    x = 2,943.00

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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.