Home / 7,164.31-9,886.59-3,977.41

Finding the Fourth Proportional to 7,164.31, 9,886.59 and 3,977.41

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Solution

The fourth proportional to 7,164.31, 9,886.59 and 3,977.41 is: 5,488.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,164.31 : 9,886.59 = 3,977.41 : x
  2. Step 2: Convert to fraction form
    7,164.31/9,886.59 = 3,977.41/x
  3. Step 3: Cross multiply
    7,164.31x = 9,886.59 × 3,977.41
  4. Step 4: Simplify right side
    7,164.31x = 39,323,021.93
  5. Step 5: Solve for x
    x = 39,323,021.93/7,164.31
  6. Step 6: Final answer
    x = 5,488.74

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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.