Home / 7,421.78-10,242.05-4,064.60

Finding the Fourth Proportional to 7,421.78, 10,242.05 and 4,064.60

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Solution

The fourth proportional to 7,421.78, 10,242.05 and 4,064.60 is: 5,609.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.78 : 10,242.05 = 4,064.60 : x
  2. Step 2: Convert to fraction form
    7,421.78/10,242.05 = 4,064.60/x
  3. Step 3: Cross multiply
    7,421.78x = 10,242.05 × 4,064.60
  4. Step 4: Simplify right side
    7,421.78x = 41,629,764.90
  5. Step 5: Solve for x
    x = 41,629,764.90/7,421.78
  6. Step 6: Final answer
    x = 5,609.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.