Home / 5,150.28-7,725.51-1,687.50

Finding the Fourth Proportional to 5,150.28, 7,725.51 and 1,687.50

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Solution

The fourth proportional to 5,150.28, 7,725.51 and 1,687.50 is: 2,531.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,150.28 : 7,725.51 = 1,687.50 : x
  2. Step 2: Convert to fraction form
    5,150.28/7,725.51 = 1,687.50/x
  3. Step 3: Cross multiply
    5,150.28x = 7,725.51 × 1,687.50
  4. Step 4: Simplify right side
    5,150.28x = 13,036,798.13
  5. Step 5: Solve for x
    x = 13,036,798.13/5,150.28
  6. Step 6: Final answer
    x = 2,531.28

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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.