Home / 7,912.50-10,919.28-4,375.74

Finding the Fourth Proportional to 7,912.50, 10,919.28 and 4,375.74

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Solution

The fourth proportional to 7,912.50, 10,919.28 and 4,375.74 is: 6,038.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,912.50 : 10,919.28 = 4,375.74 : x
  2. Step 2: Convert to fraction form
    7,912.50/10,919.28 = 4,375.74/x
  3. Step 3: Cross multiply
    7,912.50x = 10,919.28 × 4,375.74
  4. Step 4: Simplify right side
    7,912.50x = 47,779,930.27
  5. Step 5: Solve for x
    x = 47,779,930.27/7,912.50
  6. Step 6: Final answer
    x = 6,038.54

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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.