Home / 7,407.50-10,221.46-4,220.81

Finding the Fourth Proportional to 7,407.50, 10,221.46 and 4,220.81

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Solution

The fourth proportional to 7,407.50, 10,221.46 and 4,220.81 is: 5,824.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,407.50 : 10,221.46 = 4,220.81 : x
  2. Step 2: Convert to fraction form
    7,407.50/10,221.46 = 4,220.81/x
  3. Step 3: Cross multiply
    7,407.50x = 10,221.46 × 4,220.81
  4. Step 4: Simplify right side
    7,407.50x = 43,142,840.58
  5. Step 5: Solve for x
    x = 43,142,840.58/7,407.50
  6. Step 6: Final answer
    x = 5,824.21

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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.