Home / 7,655.60-11,489.88-5,186.72

Finding the Fourth Proportional to 7,655.60, 11,489.88 and 5,186.72

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Solution

The fourth proportional to 7,655.60, 11,489.88 and 5,186.72 is: 7,784.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,655.60 : 11,489.88 = 5,186.72 : x
  2. Step 2: Convert to fraction form
    7,655.60/11,489.88 = 5,186.72/x
  3. Step 3: Cross multiply
    7,655.60x = 11,489.88 × 5,186.72
  4. Step 4: Simplify right side
    7,655.60x = 59,594,790.39
  5. Step 5: Solve for x
    x = 59,594,790.39/7,655.60
  6. Step 6: Final answer
    x = 7,784.47

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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.