Home / 10,077.10-15,115.65-3,921.10

Finding the Fourth Proportional to 10,077.10, 15,115.65 and 3,921.10

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Solution

The fourth proportional to 10,077.10, 15,115.65 and 3,921.10 is: 5,881.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,077.10 : 15,115.65 = 3,921.10 : x
  2. Step 2: Convert to fraction form
    10,077.10/15,115.65 = 3,921.10/x
  3. Step 3: Cross multiply
    10,077.10x = 15,115.65 × 3,921.10
  4. Step 4: Simplify right side
    10,077.10x = 59,269,975.22
  5. Step 5: Solve for x
    x = 59,269,975.22/10,077.10
  6. Step 6: Final answer
    x = 5,881.65

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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.