Home / 1,317.88-1,975.98-624.74

Finding the Fourth Proportional to 1,317.88, 1,975.98 and 624.74

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Solution

The fourth proportional to 1,317.88, 1,975.98 and 624.74 is: 936.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.88 : 1,975.98 = 624.74 : x
  2. Step 2: Convert to fraction form
    1,317.88/1,975.98 = 624.74/x
  3. Step 3: Cross multiply
    1,317.88x = 1,975.98 × 624.74
  4. Step 4: Simplify right side
    1,317.88x = 1,234,473.75
  5. Step 5: Solve for x
    x = 1,234,473.75/1,317.88
  6. Step 6: Final answer
    x = 936.72

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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.