Home / 7,421.42-11,130.91-2,743.63

Finding the Fourth Proportional to 7,421.42, 11,130.91 and 2,743.63

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Solution

The fourth proportional to 7,421.42, 11,130.91 and 2,743.63 is: 4,114.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.42 : 11,130.91 = 2,743.63 : x
  2. Step 2: Convert to fraction form
    7,421.42/11,130.91 = 2,743.63/x
  3. Step 3: Cross multiply
    7,421.42x = 11,130.91 × 2,743.63
  4. Step 4: Simplify right side
    7,421.42x = 30,539,098.60
  5. Step 5: Solve for x
    x = 30,539,098.60/7,421.42
  6. Step 6: Final answer
    x = 4,114.99

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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.