Home / 7,639.12-10,538.94-5,649.04

Finding the Fourth Proportional to 7,639.12, 10,538.94 and 5,649.04

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Solution

The fourth proportional to 7,639.12, 10,538.94 and 5,649.04 is: 7,793.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,639.12 : 10,538.94 = 5,649.04 : x
  2. Step 2: Convert to fraction form
    7,639.12/10,538.94 = 5,649.04/x
  3. Step 3: Cross multiply
    7,639.12x = 10,538.94 × 5,649.04
  4. Step 4: Simplify right side
    7,639.12x = 59,534,893.62
  5. Step 5: Solve for x
    x = 59,534,893.62/7,639.12
  6. Step 6: Final answer
    x = 7,793.42

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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.