Home / 9,128.88-13,700.44-4,200.72

Finding the Fourth Proportional to 9,128.88, 13,700.44 and 4,200.72

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Solution

The fourth proportional to 9,128.88, 13,700.44 and 4,200.72 is: 6,304.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,128.88 : 13,700.44 = 4,200.72 : x
  2. Step 2: Convert to fraction form
    9,128.88/13,700.44 = 4,200.72/x
  3. Step 3: Cross multiply
    9,128.88x = 13,700.44 × 4,200.72
  4. Step 4: Simplify right side
    9,128.88x = 57,551,712.32
  5. Step 5: Solve for x
    x = 57,551,712.32/9,128.88
  6. Step 6: Final answer
    x = 6,304.36

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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.