Home / 2,391.48-3,588.30-1,220.76

Finding the Fourth Proportional to 2,391.48, 3,588.30 and 1,220.76

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Solution

The fourth proportional to 2,391.48, 3,588.30 and 1,220.76 is: 1,831.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,391.48 : 3,588.30 = 1,220.76 : x
  2. Step 2: Convert to fraction form
    2,391.48/3,588.30 = 1,220.76/x
  3. Step 3: Cross multiply
    2,391.48x = 3,588.30 × 1,220.76
  4. Step 4: Simplify right side
    2,391.48x = 4,380,453.11
  5. Step 5: Solve for x
    x = 4,380,453.11/2,391.48
  6. Step 6: Final answer
    x = 1,831.69

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1.5x scale

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.