Home / 7,235.63-9,985.38-4,091.75

Finding the Fourth Proportional to 7,235.63, 9,985.38 and 4,091.75

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Solution

The fourth proportional to 7,235.63, 9,985.38 and 4,091.75 is: 5,646.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,235.63 : 9,985.38 = 4,091.75 : x
  2. Step 2: Convert to fraction form
    7,235.63/9,985.38 = 4,091.75/x
  3. Step 3: Cross multiply
    7,235.63x = 9,985.38 × 4,091.75
  4. Step 4: Simplify right side
    7,235.63x = 40,857,678.62
  5. Step 5: Solve for x
    x = 40,857,678.62/7,235.63
  6. Step 6: Final answer
    x = 5,646.73

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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.