Home / 1,401.18-2,101.77-670.97

Finding the Fourth Proportional to 1,401.18, 2,101.77 and 670.97

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Solution

The fourth proportional to 1,401.18, 2,101.77 and 670.97 is: 1,006.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,401.18 : 2,101.77 = 670.97 : x
  2. Step 2: Convert to fraction form
    1,401.18/2,101.77 = 670.97/x
  3. Step 3: Cross multiply
    1,401.18x = 2,101.77 × 670.97
  4. Step 4: Simplify right side
    1,401.18x = 1,410,214.11
  5. Step 5: Solve for x
    x = 1,410,214.11/1,401.18
  6. Step 6: Final answer
    x = 1,006.45

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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.