Home / 7,220.64-9,966.56-4,236.60

Finding the Fourth Proportional to 7,220.64, 9,966.56 and 4,236.60

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Solution

The fourth proportional to 7,220.64, 9,966.56 and 4,236.60 is: 5,847.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,220.64 : 9,966.56 = 4,236.60 : x
  2. Step 2: Convert to fraction form
    7,220.64/9,966.56 = 4,236.60/x
  3. Step 3: Cross multiply
    7,220.64x = 9,966.56 × 4,236.60
  4. Step 4: Simplify right side
    7,220.64x = 42,224,328.10
  5. Step 5: Solve for x
    x = 42,224,328.10/7,220.64
  6. Step 6: Final answer
    x = 5,847.73

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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.