Home / 4,220.80-6,326.07-2,988.57

Finding the Fourth Proportional to 4,220.80, 6,326.07 and 2,988.57

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Solution

The fourth proportional to 4,220.80, 6,326.07 and 2,988.57 is: 4,479.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,220.80 : 6,326.07 = 2,988.57 : x
  2. Step 2: Convert to fraction form
    4,220.80/6,326.07 = 2,988.57/x
  3. Step 3: Cross multiply
    4,220.80x = 6,326.07 × 2,988.57
  4. Step 4: Simplify right side
    4,220.80x = 18,905,903.02
  5. Step 5: Solve for x
    x = 18,905,903.02/4,220.80
  6. Step 6: Final answer
    x = 4,479.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.