Home / 7,425.36-11,128.40-5,561.80

Finding the Fourth Proportional to 7,425.36, 11,128.40 and 5,561.80

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Solution

The fourth proportional to 7,425.36, 11,128.40 and 5,561.80 is: 8,335.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,425.36 : 11,128.40 = 5,561.80 : x
  2. Step 2: Convert to fraction form
    7,425.36/11,128.40 = 5,561.80/x
  3. Step 3: Cross multiply
    7,425.36x = 11,128.40 × 5,561.80
  4. Step 4: Simplify right side
    7,425.36x = 61,893,935.12
  5. Step 5: Solve for x
    x = 61,893,935.12/7,425.36
  6. Step 6: Final answer
    x = 8,335.48

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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.