Home / 9,321.75-12,864.03-5,130.27

Finding the Fourth Proportional to 9,321.75, 12,864.03 and 5,130.27

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Solution

The fourth proportional to 9,321.75, 12,864.03 and 5,130.27 is: 7,079.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,321.75 : 12,864.03 = 5,130.27 : x
  2. Step 2: Convert to fraction form
    9,321.75/12,864.03 = 5,130.27/x
  3. Step 3: Cross multiply
    9,321.75x = 12,864.03 × 5,130.27
  4. Step 4: Simplify right side
    9,321.75x = 65,995,947.19
  5. Step 5: Solve for x
    x = 65,995,947.19/9,321.75
  6. Step 6: Final answer
    x = 7,079.78

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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.