Home / 10,375.90-15,559.16-2,978.68

Finding the Fourth Proportional to 10,375.90, 15,559.16 and 2,978.68

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Solution

The fourth proportional to 10,375.90, 15,559.16 and 2,978.68 is: 4,466.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,375.90 : 15,559.16 = 2,978.68 : x
  2. Step 2: Convert to fraction form
    10,375.90/15,559.16 = 2,978.68/x
  3. Step 3: Cross multiply
    10,375.90x = 15,559.16 × 2,978.68
  4. Step 4: Simplify right side
    10,375.90x = 46,345,758.71
  5. Step 5: Solve for x
    x = 46,345,758.71/10,375.90
  6. Step 6: Final answer
    x = 4,466.67

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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.