Home / 6,916.28-10,375.98-1,985.72

Finding the Fourth Proportional to 6,916.28, 10,375.98 and 1,985.72

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Solution

The fourth proportional to 6,916.28, 10,375.98 and 1,985.72 is: 2,979.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,916.28 : 10,375.98 = 1,985.72 : x
  2. Step 2: Convert to fraction form
    6,916.28/10,375.98 = 1,985.72/x
  3. Step 3: Cross multiply
    6,916.28x = 10,375.98 × 1,985.72
  4. Step 4: Simplify right side
    6,916.28x = 20,603,791.01
  5. Step 5: Solve for x
    x = 20,603,791.01/6,916.28
  6. Step 6: Final answer
    x = 2,979.03

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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.