Home / 1,588.17-2,190.68-999.05

Finding the Fourth Proportional to 1,588.17, 2,190.68 and 999.05

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Solution

The fourth proportional to 1,588.17, 2,190.68 and 999.05 is: 1,378.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,588.17 : 2,190.68 = 999.05 : x
  2. Step 2: Convert to fraction form
    1,588.17/2,190.68 = 999.05/x
  3. Step 3: Cross multiply
    1,588.17x = 2,190.68 × 999.05
  4. Step 4: Simplify right side
    1,588.17x = 2,188,586.65
  5. Step 5: Solve for x
    x = 2,188,586.65/1,588.17
  6. Step 6: Final answer
    x = 1,378.05

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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.