Home / 7,784.38-10,742.44-4,989.88

Finding the Fourth Proportional to 7,784.38, 10,742.44 and 4,989.88

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Solution

The fourth proportional to 7,784.38, 10,742.44 and 4,989.88 is: 6,886.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,784.38 : 10,742.44 = 4,989.88 : x
  2. Step 2: Convert to fraction form
    7,784.38/10,742.44 = 4,989.88/x
  3. Step 3: Cross multiply
    7,784.38x = 10,742.44 × 4,989.88
  4. Step 4: Simplify right side
    7,784.38x = 53,603,432.80
  5. Step 5: Solve for x
    x = 53,603,432.80/7,784.38
  6. Step 6: Final answer
    x = 6,886.03

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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.