Home / 1,947.29-2,920.93-1,603.91

Finding the Fourth Proportional to 1,947.29, 2,920.93 and 1,603.91

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Solution

The fourth proportional to 1,947.29, 2,920.93 and 1,603.91 is: 2,405.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.29 : 2,920.93 = 1,603.91 : x
  2. Step 2: Convert to fraction form
    1,947.29/2,920.93 = 1,603.91/x
  3. Step 3: Cross multiply
    1,947.29x = 2,920.93 × 1,603.91
  4. Step 4: Simplify right side
    1,947.29x = 4,684,912.13
  5. Step 5: Solve for x
    x = 4,684,912.13/1,947.29
  6. Step 6: Final answer
    x = 2,405.87

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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.