Home / 9,811.45-13,539.91-5,335.30

Finding the Fourth Proportional to 9,811.45, 13,539.91 and 5,335.30

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Solution

The fourth proportional to 9,811.45, 13,539.91 and 5,335.30 is: 7,362.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,811.45 : 13,539.91 = 5,335.30 : x
  2. Step 2: Convert to fraction form
    9,811.45/13,539.91 = 5,335.30/x
  3. Step 3: Cross multiply
    9,811.45x = 13,539.91 × 5,335.30
  4. Step 4: Simplify right side
    9,811.45x = 72,239,495.41
  5. Step 5: Solve for x
    x = 72,239,495.41/9,811.45
  6. Step 6: Final answer
    x = 7,362.78

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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.