Home / 1,355.08-1,868.36-1,144.88

Finding the Fourth Proportional to 1,355.08, 1,868.36 and 1,144.88

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Solution

The fourth proportional to 1,355.08, 1,868.36 and 1,144.88 is: 1,578.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355.08 : 1,868.36 = 1,144.88 : x
  2. Step 2: Convert to fraction form
    1,355.08/1,868.36 = 1,144.88/x
  3. Step 3: Cross multiply
    1,355.08x = 1,868.36 × 1,144.88
  4. Step 4: Simplify right side
    1,355.08x = 2,139,048.00
  5. Step 5: Solve for x
    x = 2,139,048.00/1,355.08
  6. Step 6: Final answer
    x = 1,578.54

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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.