Home / 9,137.08-12,609.10-5,158.06

Finding the Fourth Proportional to 9,137.08, 12,609.10 and 5,158.06

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Solution

The fourth proportional to 9,137.08, 12,609.10 and 5,158.06 is: 7,118.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,137.08 : 12,609.10 = 5,158.06 : x
  2. Step 2: Convert to fraction form
    9,137.08/12,609.10 = 5,158.06/x
  3. Step 3: Cross multiply
    9,137.08x = 12,609.10 × 5,158.06
  4. Step 4: Simplify right side
    9,137.08x = 65,038,469.27
  5. Step 5: Solve for x
    x = 65,038,469.27/9,137.08
  6. Step 6: Final answer
    x = 7,118.08

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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.