Home / 4,280.18-6,415.88-2,721.33

Finding the Fourth Proportional to 4,280.18, 6,415.88 and 2,721.33

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Solution

The fourth proportional to 4,280.18, 6,415.88 and 2,721.33 is: 4,079.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,280.18 : 6,415.88 = 2,721.33 : x
  2. Step 2: Convert to fraction form
    4,280.18/6,415.88 = 2,721.33/x
  3. Step 3: Cross multiply
    4,280.18x = 6,415.88 × 2,721.33
  4. Step 4: Simplify right side
    4,280.18x = 17,459,713.11
  5. Step 5: Solve for x
    x = 17,459,713.11/4,280.18
  6. Step 6: Final answer
    x = 4,079.21

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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.