Home / 7,921.76-10,932-4,777.32

Finding the Fourth Proportional to 7,921.76, 10,932 and 4,777.32

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Solution

The fourth proportional to 7,921.76, 10,932 and 4,777.32 is: 6,592.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,921.76 : 10,932 = 4,777.32 : x
  2. Step 2: Convert to fraction form
    7,921.76/10,932 = 4,777.32/x
  3. Step 3: Cross multiply
    7,921.76x = 10,932 × 4,777.32
  4. Step 4: Simplify right side
    7,921.76x = 52,225,662.24
  5. Step 5: Solve for x
    x = 52,225,662.24/7,921.76
  6. Step 6: Final answer
    x = 6,592.68

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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.