Home / 2,391.20-3,586.80-1,095.20

Finding the Fourth Proportional to 2,391.20, 3,586.80 and 1,095.20

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Solution

The fourth proportional to 2,391.20, 3,586.80 and 1,095.20 is: 1,642.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,391.20 : 3,586.80 = 1,095.20 : x
  2. Step 2: Convert to fraction form
    2,391.20/3,586.80 = 1,095.20/x
  3. Step 3: Cross multiply
    2,391.20x = 3,586.80 × 1,095.20
  4. Step 4: Simplify right side
    2,391.20x = 3,928,263.36
  5. Step 5: Solve for x
    x = 3,928,263.36/2,391.20
  6. Step 6: Final answer
    x = 1,642.80

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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.