Home / 1,581.39-2,370.42-540.45

Finding the Fourth Proportional to 1,581.39, 2,370.42 and 540.45

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Solution

The fourth proportional to 1,581.39, 2,370.42 and 540.45 is: 810.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581.39 : 2,370.42 = 540.45 : x
  2. Step 2: Convert to fraction form
    1,581.39/2,370.42 = 540.45/x
  3. Step 3: Cross multiply
    1,581.39x = 2,370.42 × 540.45
  4. Step 4: Simplify right side
    1,581.39x = 1,281,093.49
  5. Step 5: Solve for x
    x = 1,281,093.49/1,581.39
  6. Step 6: Final answer
    x = 810.11

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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.