Home / 7,628.40-11,439.24-2,434.80

Finding the Fourth Proportional to 7,628.40, 11,439.24 and 2,434.80

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Solution

The fourth proportional to 7,628.40, 11,439.24 and 2,434.80 is: 3,651.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,628.40 : 11,439.24 = 2,434.80 : x
  2. Step 2: Convert to fraction form
    7,628.40/11,439.24 = 2,434.80/x
  3. Step 3: Cross multiply
    7,628.40x = 11,439.24 × 2,434.80
  4. Step 4: Simplify right side
    7,628.40x = 27,852,261.55
  5. Step 5: Solve for x
    x = 27,852,261.55/7,628.40
  6. Step 6: Final answer
    x = 3,651.13

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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.