Home / 9,115.16-12,580.12-5,137.04

Finding the Fourth Proportional to 9,115.16, 12,580.12 and 5,137.04

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Solution

The fourth proportional to 9,115.16, 12,580.12 and 5,137.04 is: 7,089.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,115.16 : 12,580.12 = 5,137.04 : x
  2. Step 2: Convert to fraction form
    9,115.16/12,580.12 = 5,137.04/x
  3. Step 3: Cross multiply
    9,115.16x = 12,580.12 × 5,137.04
  4. Step 4: Simplify right side
    9,115.16x = 64,624,579.64
  5. Step 5: Solve for x
    x = 64,624,579.64/9,115.16
  6. Step 6: Final answer
    x = 7,089.79

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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.