Home / 7,400.40-10,213.20-4,257.60

Finding the Fourth Proportional to 7,400.40, 10,213.20 and 4,257.60

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Solution

The fourth proportional to 7,400.40, 10,213.20 and 4,257.60 is: 5,875.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,400.40 : 10,213.20 = 4,257.60 : x
  2. Step 2: Convert to fraction form
    7,400.40/10,213.20 = 4,257.60/x
  3. Step 3: Cross multiply
    7,400.40x = 10,213.20 × 4,257.60
  4. Step 4: Simplify right side
    7,400.40x = 43,483,720.32
  5. Step 5: Solve for x
    x = 43,483,720.32/7,400.40
  6. Step 6: Final answer
    x = 5,875.86

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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.