Home / 1,575.44-2,363.16-421.19

Finding the Fourth Proportional to 1,575.44, 2,363.16 and 421.19

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Solution

The fourth proportional to 1,575.44, 2,363.16 and 421.19 is: 631.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,575.44 : 2,363.16 = 421.19 : x
  2. Step 2: Convert to fraction form
    1,575.44/2,363.16 = 421.19/x
  3. Step 3: Cross multiply
    1,575.44x = 2,363.16 × 421.19
  4. Step 4: Simplify right side
    1,575.44x = 995,339.36
  5. Step 5: Solve for x
    x = 995,339.36/1,575.44
  6. Step 6: Final answer
    x = 631.79

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Double scale
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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.