Home / 9,147.70-12,623.72-5,370.20

Finding the Fourth Proportional to 9,147.70, 12,623.72 and 5,370.20

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Solution

The fourth proportional to 9,147.70, 12,623.72 and 5,370.20 is: 7,410.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,147.70 : 12,623.72 = 5,370.20 : x
  2. Step 2: Convert to fraction form
    9,147.70/12,623.72 = 5,370.20/x
  3. Step 3: Cross multiply
    9,147.70x = 12,623.72 × 5,370.20
  4. Step 4: Simplify right side
    9,147.70x = 67,791,901.14
  5. Step 5: Solve for x
    x = 67,791,901.14/9,147.70
  6. Step 6: Final answer
    x = 7,410.81

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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.