Home / 1,299.60-1,947.42-1,260.06

Finding the Fourth Proportional to 1,299.60, 1,947.42 and 1,260.06

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Solution

The fourth proportional to 1,299.60, 1,947.42 and 1,260.06 is: 1,888.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299.60 : 1,947.42 = 1,260.06 : x
  2. Step 2: Convert to fraction form
    1,299.60/1,947.42 = 1,260.06/x
  3. Step 3: Cross multiply
    1,299.60x = 1,947.42 × 1,260.06
  4. Step 4: Simplify right side
    1,299.60x = 2,453,866.05
  5. Step 5: Solve for x
    x = 2,453,866.05/1,299.60
  6. Step 6: Final answer
    x = 1,888.17

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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.