Home / 1,887.03-2,601.75-1,213.65

Finding the Fourth Proportional to 1,887.03, 2,601.75 and 1,213.65

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Solution

The fourth proportional to 1,887.03, 2,601.75 and 1,213.65 is: 1,673.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,887.03 : 2,601.75 = 1,213.65 : x
  2. Step 2: Convert to fraction form
    1,887.03/2,601.75 = 1,213.65/x
  3. Step 3: Cross multiply
    1,887.03x = 2,601.75 × 1,213.65
  4. Step 4: Simplify right side
    1,887.03x = 3,157,613.89
  5. Step 5: Solve for x
    x = 3,157,613.89/1,887.03
  6. Step 6: Final answer
    x = 1,673.32

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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.