Home / 7,664.47-10,579.85-4,478.80

Finding the Fourth Proportional to 7,664.47, 10,579.85 and 4,478.80

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Solution

The fourth proportional to 7,664.47, 10,579.85 and 4,478.80 is: 6,182.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,664.47 : 10,579.85 = 4,478.80 : x
  2. Step 2: Convert to fraction form
    7,664.47/10,579.85 = 4,478.80/x
  3. Step 3: Cross multiply
    7,664.47x = 10,579.85 × 4,478.80
  4. Step 4: Simplify right side
    7,664.47x = 47,384,984.88
  5. Step 5: Solve for x
    x = 47,384,984.88/7,664.47
  6. Step 6: Final answer
    x = 6,182.43

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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.