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Finding the Fourth Proportional to 1,377.65, 1,895.52 and 1,190.54

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Solution

The fourth proportional to 1,377.65, 1,895.52 and 1,190.54 is: 1,638.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,377.65 : 1,895.52 = 1,190.54 : x
  2. Step 2: Convert to fraction form
    1,377.65/1,895.52 = 1,190.54/x
  3. Step 3: Cross multiply
    1,377.65x = 1,895.52 × 1,190.54
  4. Step 4: Simplify right side
    1,377.65x = 2,256,697.12
  5. Step 5: Solve for x
    x = 2,256,697.12/1,377.65
  6. Step 6: Final answer
    x = 1,638.07

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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.