Home / 7,939.08-10,961.10-5,420.27

Finding the Fourth Proportional to 7,939.08, 10,961.10 and 5,420.27

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Solution

The fourth proportional to 7,939.08, 10,961.10 and 5,420.27 is: 7,483.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,939.08 : 10,961.10 = 5,420.27 : x
  2. Step 2: Convert to fraction form
    7,939.08/10,961.10 = 5,420.27/x
  3. Step 3: Cross multiply
    7,939.08x = 10,961.10 × 5,420.27
  4. Step 4: Simplify right side
    7,939.08x = 59,412,148.90
  5. Step 5: Solve for x
    x = 59,412,148.90/7,939.08
  6. Step 6: Final answer
    x = 7,483.51

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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.