Home / 7,708.30-11,558.40-2,777.20

Finding the Fourth Proportional to 7,708.30, 11,558.40 and 2,777.20

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Solution

The fourth proportional to 7,708.30, 11,558.40 and 2,777.20 is: 4,164.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,708.30 : 11,558.40 = 2,777.20 : x
  2. Step 2: Convert to fraction form
    7,708.30/11,558.40 = 2,777.20/x
  3. Step 3: Cross multiply
    7,708.30x = 11,558.40 × 2,777.20
  4. Step 4: Simplify right side
    7,708.30x = 32,099,988.48
  5. Step 5: Solve for x
    x = 32,099,988.48/7,708.30
  6. Step 6: Final answer
    x = 4,164.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.