Home / 9,147.96-12,623.85-5,115.02

Finding the Fourth Proportional to 9,147.96, 12,623.85 and 5,115.02

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Solution

The fourth proportional to 9,147.96, 12,623.85 and 5,115.02 is: 7,058.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,147.96 : 12,623.85 = 5,115.02 : x
  2. Step 2: Convert to fraction form
    9,147.96/12,623.85 = 5,115.02/x
  3. Step 3: Cross multiply
    9,147.96x = 12,623.85 × 5,115.02
  4. Step 4: Simplify right side
    9,147.96x = 64,571,182.11
  5. Step 5: Solve for x
    x = 64,571,182.11/9,147.96
  6. Step 6: Final answer
    x = 7,058.53

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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.