Home / 5,173.32-7,139.08-2,815.41

Finding the Fourth Proportional to 5,173.32, 7,139.08 and 2,815.41

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Solution

The fourth proportional to 5,173.32, 7,139.08 and 2,815.41 is: 3,885.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,173.32 : 7,139.08 = 2,815.41 : x
  2. Step 2: Convert to fraction form
    5,173.32/7,139.08 = 2,815.41/x
  3. Step 3: Cross multiply
    5,173.32x = 7,139.08 × 2,815.41
  4. Step 4: Simplify right side
    5,173.32x = 20,099,437.22
  5. Step 5: Solve for x
    x = 20,099,437.22/5,173.32
  6. Step 6: Final answer
    x = 3,885.21

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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.