Home / 9,192.40-12,687.77-5,215.84

Finding the Fourth Proportional to 9,192.40, 12,687.77 and 5,215.84

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Solution

The fourth proportional to 9,192.40, 12,687.77 and 5,215.84 is: 7,199.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,192.40 : 12,687.77 = 5,215.84 : x
  2. Step 2: Convert to fraction form
    9,192.40/12,687.77 = 5,215.84/x
  3. Step 3: Cross multiply
    9,192.40x = 12,687.77 × 5,215.84
  4. Step 4: Simplify right side
    9,192.40x = 66,177,378.28
  5. Step 5: Solve for x
    x = 66,177,378.28/9,192.40
  6. Step 6: Final answer
    x = 7,199.14

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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.