Home / 7,164.12-9,886.57-3,977.48

Finding the Fourth Proportional to 7,164.12, 9,886.57 and 3,977.48

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Solution

The fourth proportional to 7,164.12, 9,886.57 and 3,977.48 is: 5,488.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,164.12 : 9,886.57 = 3,977.48 : x
  2. Step 2: Convert to fraction form
    7,164.12/9,886.57 = 3,977.48/x
  3. Step 3: Cross multiply
    7,164.12x = 9,886.57 × 3,977.48
  4. Step 4: Simplify right side
    7,164.12x = 39,323,643.78
  5. Step 5: Solve for x
    x = 39,323,643.78/7,164.12
  6. Step 6: Final answer
    x = 5,488.97

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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.