Home / 7,687.36-10,599.60-5,381.92

Finding the Fourth Proportional to 7,687.36, 10,599.60 and 5,381.92

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Solution

The fourth proportional to 7,687.36, 10,599.60 and 5,381.92 is: 7,420.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,687.36 : 10,599.60 = 5,381.92 : x
  2. Step 2: Convert to fraction form
    7,687.36/10,599.60 = 5,381.92/x
  3. Step 3: Cross multiply
    7,687.36x = 10,599.60 × 5,381.92
  4. Step 4: Simplify right side
    7,687.36x = 57,046,199.23
  5. Step 5: Solve for x
    x = 57,046,199.23/7,687.36
  6. Step 6: Final answer
    x = 7,420.78

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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.