Home / 4,287.63-6,431.45-1,690.50

Finding the Fourth Proportional to 4,287.63, 6,431.45 and 1,690.50

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Solution

The fourth proportional to 4,287.63, 6,431.45 and 1,690.50 is: 2,535.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,287.63 : 6,431.45 = 1,690.50 : x
  2. Step 2: Convert to fraction form
    4,287.63/6,431.45 = 1,690.50/x
  3. Step 3: Cross multiply
    4,287.63x = 6,431.45 × 1,690.50
  4. Step 4: Simplify right side
    4,287.63x = 10,872,366.23
  5. Step 5: Solve for x
    x = 10,872,366.23/4,287.63
  6. Step 6: Final answer
    x = 2,535.75

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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.