Home / 2,648.81-3,970.19-1,260.18

Finding the Fourth Proportional to 2,648.81, 3,970.19 and 1,260.18

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Solution

The fourth proportional to 2,648.81, 3,970.19 and 1,260.18 is: 1,888.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,648.81 : 3,970.19 = 1,260.18 : x
  2. Step 2: Convert to fraction form
    2,648.81/3,970.19 = 1,260.18/x
  3. Step 3: Cross multiply
    2,648.81x = 3,970.19 × 1,260.18
  4. Step 4: Simplify right side
    2,648.81x = 5,003,157.18
  5. Step 5: Solve for x
    x = 5,003,157.18/2,648.81
  6. Step 6: Final answer
    x = 1,888.83

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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.