Home / 6,979.60-10,453.20-4,776.40

Finding the Fourth Proportional to 6,979.60, 10,453.20 and 4,776.40

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Solution

The fourth proportional to 6,979.60, 10,453.20 and 4,776.40 is: 7,153.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,979.60 : 10,453.20 = 4,776.40 : x
  2. Step 2: Convert to fraction form
    6,979.60/10,453.20 = 4,776.40/x
  3. Step 3: Cross multiply
    6,979.60x = 10,453.20 × 4,776.40
  4. Step 4: Simplify right side
    6,979.60x = 49,928,664.48
  5. Step 5: Solve for x
    x = 49,928,664.48/6,979.60
  6. Step 6: Final answer
    x = 7,153.51

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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.