Home / 1,401.83-2,102.60-621.85

Finding the Fourth Proportional to 1,401.83, 2,102.60 and 621.85

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Solution

The fourth proportional to 1,401.83, 2,102.60 and 621.85 is: 932.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,401.83 : 2,102.60 = 621.85 : x
  2. Step 2: Convert to fraction form
    1,401.83/2,102.60 = 621.85/x
  3. Step 3: Cross multiply
    1,401.83x = 2,102.60 × 621.85
  4. Step 4: Simplify right side
    1,401.83x = 1,307,501.81
  5. Step 5: Solve for x
    x = 1,307,501.81/1,401.83
  6. Step 6: Final answer
    x = 932.71

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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.