Home / 7,721.60-10,655.78-4,184.80

Finding the Fourth Proportional to 7,721.60, 10,655.78 and 4,184.80

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Solution

The fourth proportional to 7,721.60, 10,655.78 and 4,184.80 is: 5,775.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,721.60 : 10,655.78 = 4,184.80 : x
  2. Step 2: Convert to fraction form
    7,721.60/10,655.78 = 4,184.80/x
  3. Step 3: Cross multiply
    7,721.60x = 10,655.78 × 4,184.80
  4. Step 4: Simplify right side
    7,721.60x = 44,592,260.58
  5. Step 5: Solve for x
    x = 44,592,260.58/7,721.60
  6. Step 6: Final answer
    x = 5,775.01

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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.