Home / 1,401.18-2,102.20-579.51

Finding the Fourth Proportional to 1,401.18, 2,102.20 and 579.51

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Solution

The fourth proportional to 1,401.18, 2,102.20 and 579.51 is: 869.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,401.18 : 2,102.20 = 579.51 : x
  2. Step 2: Convert to fraction form
    1,401.18/2,102.20 = 579.51/x
  3. Step 3: Cross multiply
    1,401.18x = 2,102.20 × 579.51
  4. Step 4: Simplify right side
    1,401.18x = 1,218,253.65
  5. Step 5: Solve for x
    x = 1,218,253.65/1,401.18
  6. Step 6: Final answer
    x = 869.45

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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.