Home / 7,749.28-10,681.44-6,485.92

Finding the Fourth Proportional to 7,749.28, 10,681.44 and 6,485.92

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Solution

The fourth proportional to 7,749.28, 10,681.44 and 6,485.92 is: 8,940.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,749.28 : 10,681.44 = 6,485.92 : x
  2. Step 2: Convert to fraction form
    7,749.28/10,681.44 = 6,485.92/x
  3. Step 3: Cross multiply
    7,749.28x = 10,681.44 × 6,485.92
  4. Step 4: Simplify right side
    7,749.28x = 69,278,965.32
  5. Step 5: Solve for x
    x = 69,278,965.32/7,749.28
  6. Step 6: Final answer
    x = 8,940.05

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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.