Home / 1,028.90-1,419.93-586.87

Finding the Fourth Proportional to 1,028.90, 1,419.93 and 586.87

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Solution

The fourth proportional to 1,028.90, 1,419.93 and 586.87 is: 809.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,028.90 : 1,419.93 = 586.87 : x
  2. Step 2: Convert to fraction form
    1,028.90/1,419.93 = 586.87/x
  3. Step 3: Cross multiply
    1,028.90x = 1,419.93 × 586.87
  4. Step 4: Simplify right side
    1,028.90x = 833,310.77
  5. Step 5: Solve for x
    x = 833,310.77/1,028.90
  6. Step 6: Final answer
    x = 809.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.