Home / 9,581.40-13,221.28-5,331.79

Finding the Fourth Proportional to 9,581.40, 13,221.28 and 5,331.79

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Solution

The fourth proportional to 9,581.40, 13,221.28 and 5,331.79 is: 7,357.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,581.40 : 13,221.28 = 5,331.79 : x
  2. Step 2: Convert to fraction form
    9,581.40/13,221.28 = 5,331.79/x
  3. Step 3: Cross multiply
    9,581.40x = 13,221.28 × 5,331.79
  4. Step 4: Simplify right side
    9,581.40x = 70,493,088.49
  5. Step 5: Solve for x
    x = 70,493,088.49/9,581.40
  6. Step 6: Final answer
    x = 7,357.28

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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.