Home / 1,284.11-1,925.38-624.68

Finding the Fourth Proportional to 1,284.11, 1,925.38 and 624.68

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Solution

The fourth proportional to 1,284.11, 1,925.38 and 624.68 is: 936.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284.11 : 1,925.38 = 624.68 : x
  2. Step 2: Convert to fraction form
    1,284.11/1,925.38 = 624.68/x
  3. Step 3: Cross multiply
    1,284.11x = 1,925.38 × 624.68
  4. Step 4: Simplify right side
    1,284.11x = 1,202,746.38
  5. Step 5: Solve for x
    x = 1,202,746.38/1,284.11
  6. Step 6: Final answer
    x = 936.64

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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.