Home / 2,389.48-3,586.20-1,220.35

Finding the Fourth Proportional to 2,389.48, 3,586.20 and 1,220.35

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Solution

The fourth proportional to 2,389.48, 3,586.20 and 1,220.35 is: 1,831.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.48 : 3,586.20 = 1,220.35 : x
  2. Step 2: Convert to fraction form
    2,389.48/3,586.20 = 1,220.35/x
  3. Step 3: Cross multiply
    2,389.48x = 3,586.20 × 1,220.35
  4. Step 4: Simplify right side
    2,389.48x = 4,376,419.17
  5. Step 5: Solve for x
    x = 4,376,419.17/2,389.48
  6. Step 6: Final answer
    x = 1,831.54

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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.