Home / 6,921.64-9,551.88-3,777.76

Finding the Fourth Proportional to 6,921.64, 9,551.88 and 3,777.76

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Solution

The fourth proportional to 6,921.64, 9,551.88 and 3,777.76 is: 5,213.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,921.64 : 9,551.88 = 3,777.76 : x
  2. Step 2: Convert to fraction form
    6,921.64/9,551.88 = 3,777.76/x
  3. Step 3: Cross multiply
    6,921.64x = 9,551.88 × 3,777.76
  4. Step 4: Simplify right side
    6,921.64x = 36,084,710.19
  5. Step 5: Solve for x
    x = 36,084,710.19/6,921.64
  6. Step 6: Final answer
    x = 5,213.32

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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.