Home / 2,947.75-4,068.27-1,689.01

Finding the Fourth Proportional to 2,947.75, 4,068.27 and 1,689.01

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Solution

The fourth proportional to 2,947.75, 4,068.27 and 1,689.01 is: 2,331.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.75 : 4,068.27 = 1,689.01 : x
  2. Step 2: Convert to fraction form
    2,947.75/4,068.27 = 1,689.01/x
  3. Step 3: Cross multiply
    2,947.75x = 4,068.27 × 1,689.01
  4. Step 4: Simplify right side
    2,947.75x = 6,871,338.54
  5. Step 5: Solve for x
    x = 6,871,338.54/2,947.75
  6. Step 6: Final answer
    x = 2,331.05

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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.