Home / 9,115.83-12,580.26-5,137.11

Finding the Fourth Proportional to 9,115.83, 12,580.26 and 5,137.11

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Solution

The fourth proportional to 9,115.83, 12,580.26 and 5,137.11 is: 7,089.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,115.83 : 12,580.26 = 5,137.11 : x
  2. Step 2: Convert to fraction form
    9,115.83/12,580.26 = 5,137.11/x
  3. Step 3: Cross multiply
    9,115.83x = 12,580.26 × 5,137.11
  4. Step 4: Simplify right side
    9,115.83x = 64,626,179.45
  5. Step 5: Solve for x
    x = 64,626,179.45/9,115.83
  6. Step 6: Final answer
    x = 7,089.45

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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.