Home / 7,221-9,965.08-4,236.90

Finding the Fourth Proportional to 7,221, 9,965.08 and 4,236.90

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Solution

The fourth proportional to 7,221, 9,965.08 and 4,236.90 is: 5,846.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,221 : 9,965.08 = 4,236.90 : x
  2. Step 2: Convert to fraction form
    7,221/9,965.08 = 4,236.90/x
  3. Step 3: Cross multiply
    7,221x = 9,965.08 × 4,236.90
  4. Step 4: Simplify right side
    7,221x = 42,221,047.45
  5. Step 5: Solve for x
    x = 42,221,047.45/7,221
  6. Step 6: Final answer
    x = 5,846.98

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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.