Home / 1,021.15-1,529.70-587.80

Finding the Fourth Proportional to 1,021.15, 1,529.70 and 587.80

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Solution

The fourth proportional to 1,021.15, 1,529.70 and 587.80 is: 880.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021.15 : 1,529.70 = 587.80 : x
  2. Step 2: Convert to fraction form
    1,021.15/1,529.70 = 587.80/x
  3. Step 3: Cross multiply
    1,021.15x = 1,529.70 × 587.80
  4. Step 4: Simplify right side
    1,021.15x = 899,157.66
  5. Step 5: Solve for x
    x = 899,157.66/1,021.15
  6. Step 6: Final answer
    x = 880.53

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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.