Home / 1,054.40-1,581.94-324.12

Finding the Fourth Proportional to 1,054.40, 1,581.94 and 324.12

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Solution

The fourth proportional to 1,054.40, 1,581.94 and 324.12 is: 486.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,054.40 : 1,581.94 = 324.12 : x
  2. Step 2: Convert to fraction form
    1,054.40/1,581.94 = 324.12/x
  3. Step 3: Cross multiply
    1,054.40x = 1,581.94 × 324.12
  4. Step 4: Simplify right side
    1,054.40x = 512,738.39
  5. Step 5: Solve for x
    x = 512,738.39/1,054.40
  6. Step 6: Final answer
    x = 486.28

Related Problems

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Double scale
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1.5x scale

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.