Home / 9,715.50-13,407.39-5,523.75

Finding the Fourth Proportional to 9,715.50, 13,407.39 and 5,523.75

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Solution

The fourth proportional to 9,715.50, 13,407.39 and 5,523.75 is: 7,622.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,715.50 : 13,407.39 = 5,523.75 : x
  2. Step 2: Convert to fraction form
    9,715.50/13,407.39 = 5,523.75/x
  3. Step 3: Cross multiply
    9,715.50x = 13,407.39 × 5,523.75
  4. Step 4: Simplify right side
    9,715.50x = 74,059,070.51
  5. Step 5: Solve for x
    x = 74,059,070.51/9,715.50
  6. Step 6: Final answer
    x = 7,622.78

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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.