Home / 7,639.78-11,458.46-4,677.20

Finding the Fourth Proportional to 7,639.78, 11,458.46 and 4,677.20

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Solution

The fourth proportional to 7,639.78, 11,458.46 and 4,677.20 is: 7,015.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,639.78 : 11,458.46 = 4,677.20 : x
  2. Step 2: Convert to fraction form
    7,639.78/11,458.46 = 4,677.20/x
  3. Step 3: Cross multiply
    7,639.78x = 11,458.46 × 4,677.20
  4. Step 4: Simplify right side
    7,639.78x = 53,593,549.45
  5. Step 5: Solve for x
    x = 53,593,549.45/7,639.78
  6. Step 6: Final answer
    x = 7,015.07

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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.