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Finding the Fourth Proportional to 1,368.75, 1,887.87 and 895.89

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Solution

The fourth proportional to 1,368.75, 1,887.87 and 895.89 is: 1,235.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368.75 : 1,887.87 = 895.89 : x
  2. Step 2: Convert to fraction form
    1,368.75/1,887.87 = 895.89/x
  3. Step 3: Cross multiply
    1,368.75x = 1,887.87 × 895.89
  4. Step 4: Simplify right side
    1,368.75x = 1,691,323.85
  5. Step 5: Solve for x
    x = 1,691,323.85/1,368.75
  6. Step 6: Final answer
    x = 1,235.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.