Home / 7,615.20-11,417.40-3,451.80

Finding the Fourth Proportional to 7,615.20, 11,417.40 and 3,451.80

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Solution

The fourth proportional to 7,615.20, 11,417.40 and 3,451.80 is: 5,175.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,615.20 : 11,417.40 = 3,451.80 : x
  2. Step 2: Convert to fraction form
    7,615.20/11,417.40 = 3,451.80/x
  3. Step 3: Cross multiply
    7,615.20x = 11,417.40 × 3,451.80
  4. Step 4: Simplify right side
    7,615.20x = 39,410,581.32
  5. Step 5: Solve for x
    x = 39,410,581.32/7,615.20
  6. Step 6: Final answer
    x = 5,175.25

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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.