Home / 7,339.36-10,128.90-4,195.75

Finding the Fourth Proportional to 7,339.36, 10,128.90 and 4,195.75

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Solution

The fourth proportional to 7,339.36, 10,128.90 and 4,195.75 is: 5,790.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,339.36 : 10,128.90 = 4,195.75 : x
  2. Step 2: Convert to fraction form
    7,339.36/10,128.90 = 4,195.75/x
  3. Step 3: Cross multiply
    7,339.36x = 10,128.90 × 4,195.75
  4. Step 4: Simplify right side
    7,339.36x = 42,498,332.18
  5. Step 5: Solve for x
    x = 42,498,332.18/7,339.36
  6. Step 6: Final answer
    x = 5,790.47

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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.