Home / 2,161.41-3,242.11-1,430.81

Finding the Fourth Proportional to 2,161.41, 3,242.11 and 1,430.81

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Solution

The fourth proportional to 2,161.41, 3,242.11 and 1,430.81 is: 2,146.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.41 : 3,242.11 = 1,430.81 : x
  2. Step 2: Convert to fraction form
    2,161.41/3,242.11 = 1,430.81/x
  3. Step 3: Cross multiply
    2,161.41x = 3,242.11 × 1,430.81
  4. Step 4: Simplify right side
    2,161.41x = 4,638,862.74
  5. Step 5: Solve for x
    x = 4,638,862.74/2,161.41
  6. Step 6: Final answer
    x = 2,146.22

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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.