Home / 2,421.72-3,631.22-1,186.48

Finding the Fourth Proportional to 2,421.72, 3,631.22 and 1,186.48

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Solution

The fourth proportional to 2,421.72, 3,631.22 and 1,186.48 is: 1,779.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.72 : 3,631.22 = 1,186.48 : x
  2. Step 2: Convert to fraction form
    2,421.72/3,631.22 = 1,186.48/x
  3. Step 3: Cross multiply
    2,421.72x = 3,631.22 × 1,186.48
  4. Step 4: Simplify right side
    2,421.72x = 4,308,369.91
  5. Step 5: Solve for x
    x = 4,308,369.91/2,421.72
  6. Step 6: Final answer
    x = 1,779.05

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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.