Home / 10,115.08-15,162.82-3,870.28

Finding the Fourth Proportional to 10,115.08, 15,162.82 and 3,870.28

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Solution

The fourth proportional to 10,115.08, 15,162.82 and 3,870.28 is: 5,801.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,115.08 : 15,162.82 = 3,870.28 : x
  2. Step 2: Convert to fraction form
    10,115.08/15,162.82 = 3,870.28/x
  3. Step 3: Cross multiply
    10,115.08x = 15,162.82 × 3,870.28
  4. Step 4: Simplify right side
    10,115.08x = 58,684,339.64
  5. Step 5: Solve for x
    x = 58,684,339.64/10,115.08
  6. Step 6: Final answer
    x = 5,801.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.