Home / 1,947.63-2,680.91-1,698.50

Finding the Fourth Proportional to 1,947.63, 2,680.91 and 1,698.50

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Solution

The fourth proportional to 1,947.63, 2,680.91 and 1,698.50 is: 2,337.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.63 : 2,680.91 = 1,698.50 : x
  2. Step 2: Convert to fraction form
    1,947.63/2,680.91 = 1,698.50/x
  3. Step 3: Cross multiply
    1,947.63x = 2,680.91 × 1,698.50
  4. Step 4: Simplify right side
    1,947.63x = 4,553,525.64
  5. Step 5: Solve for x
    x = 4,553,525.64/1,947.63
  6. Step 6: Final answer
    x = 2,337.98

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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.