Home / 9,771.28-13,490.52-6,786.16

Finding the Fourth Proportional to 9,771.28, 13,490.52 and 6,786.16

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Solution

The fourth proportional to 9,771.28, 13,490.52 and 6,786.16 is: 9,369.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,771.28 : 13,490.52 = 6,786.16 : x
  2. Step 2: Convert to fraction form
    9,771.28/13,490.52 = 6,786.16/x
  3. Step 3: Cross multiply
    9,771.28x = 13,490.52 × 6,786.16
  4. Step 4: Simplify right side
    9,771.28x = 91,548,827.20
  5. Step 5: Solve for x
    x = 91,548,827.20/9,771.28
  6. Step 6: Final answer
    x = 9,369.17

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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.