Home / 1,401.81-2,101.19-708.09

Finding the Fourth Proportional to 1,401.81, 2,101.19 and 708.09

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Solution

The fourth proportional to 1,401.81, 2,101.19 and 708.09 is: 1,061.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,401.81 : 2,101.19 = 708.09 : x
  2. Step 2: Convert to fraction form
    1,401.81/2,101.19 = 708.09/x
  3. Step 3: Cross multiply
    1,401.81x = 2,101.19 × 708.09
  4. Step 4: Simplify right side
    1,401.81x = 1,487,828.09
  5. Step 5: Solve for x
    x = 1,487,828.09/1,401.81
  6. Step 6: Final answer
    x = 1,061.36

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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.