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Finding the Fourth Proportional to 2,987.74, 4,484.22 and 2,162.08

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Solution

The fourth proportional to 2,987.74, 4,484.22 and 2,162.08 is: 3,245.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.74 : 4,484.22 = 2,162.08 : x
  2. Step 2: Convert to fraction form
    2,987.74/4,484.22 = 2,162.08/x
  3. Step 3: Cross multiply
    2,987.74x = 4,484.22 × 2,162.08
  4. Step 4: Simplify right side
    2,987.74x = 9,695,242.38
  5. Step 5: Solve for x
    x = 9,695,242.38/2,987.74
  6. Step 6: Final answer
    x = 3,245.01

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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.