Home / 1,687.44-2,531.40-533.28

Finding the Fourth Proportional to 1,687.44, 2,531.40 and 533.28

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Solution

The fourth proportional to 1,687.44, 2,531.40 and 533.28 is: 800.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687.44 : 2,531.40 = 533.28 : x
  2. Step 2: Convert to fraction form
    1,687.44/2,531.40 = 533.28/x
  3. Step 3: Cross multiply
    1,687.44x = 2,531.40 × 533.28
  4. Step 4: Simplify right side
    1,687.44x = 1,349,944.99
  5. Step 5: Solve for x
    x = 1,349,944.99/1,687.44
  6. Step 6: Final answer
    x = 800.00

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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.