Home / 5,280.21-7,920.36-1,817.46

Finding the Fourth Proportional to 5,280.21, 7,920.36 and 1,817.46

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Solution

The fourth proportional to 5,280.21, 7,920.36 and 1,817.46 is: 2,726.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.21 : 7,920.36 = 1,817.46 : x
  2. Step 2: Convert to fraction form
    5,280.21/7,920.36 = 1,817.46/x
  3. Step 3: Cross multiply
    5,280.21x = 7,920.36 × 1,817.46
  4. Step 4: Simplify right side
    5,280.21x = 14,394,937.49
  5. Step 5: Solve for x
    x = 14,394,937.49/5,280.21
  6. Step 6: Final answer
    x = 2,726.21

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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.