Home / 1,029.15-1,420.32-587.19

Finding the Fourth Proportional to 1,029.15, 1,420.32 and 587.19

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Solution

The fourth proportional to 1,029.15, 1,420.32 and 587.19 is: 810.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,029.15 : 1,420.32 = 587.19 : x
  2. Step 2: Convert to fraction form
    1,029.15/1,420.32 = 587.19/x
  3. Step 3: Cross multiply
    1,029.15x = 1,420.32 × 587.19
  4. Step 4: Simplify right side
    1,029.15x = 833,997.70
  5. Step 5: Solve for x
    x = 833,997.70/1,029.15
  6. Step 6: Final answer
    x = 810.38

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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.