Home / 7,447.83-10,278.30-4,090.80

Finding the Fourth Proportional to 7,447.83, 10,278.30 and 4,090.80

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Solution

The fourth proportional to 7,447.83, 10,278.30 and 4,090.80 is: 5,645.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,447.83 : 10,278.30 = 4,090.80 : x
  2. Step 2: Convert to fraction form
    7,447.83/10,278.30 = 4,090.80/x
  3. Step 3: Cross multiply
    7,447.83x = 10,278.30 × 4,090.80
  4. Step 4: Simplify right side
    7,447.83x = 42,046,469.64
  5. Step 5: Solve for x
    x = 42,046,469.64/7,447.83
  6. Step 6: Final answer
    x = 5,645.47

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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.