Home / 7,221.60-9,966.51-4,388.36

Finding the Fourth Proportional to 7,221.60, 9,966.51 and 4,388.36

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Solution

The fourth proportional to 7,221.60, 9,966.51 and 4,388.36 is: 6,056.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,221.60 : 9,966.51 = 4,388.36 : x
  2. Step 2: Convert to fraction form
    7,221.60/9,966.51 = 4,388.36/x
  3. Step 3: Cross multiply
    7,221.60x = 9,966.51 × 4,388.36
  4. Step 4: Simplify right side
    7,221.60x = 43,736,583.99
  5. Step 5: Solve for x
    x = 43,736,583.99/7,221.60
  6. Step 6: Final answer
    x = 6,056.36

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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.