Home / 5,276.40-7,282.88-3,285.78

Finding the Fourth Proportional to 5,276.40, 7,282.88 and 3,285.78

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Solution

The fourth proportional to 5,276.40, 7,282.88 and 3,285.78 is: 4,535.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,276.40 : 7,282.88 = 3,285.78 : x
  2. Step 2: Convert to fraction form
    5,276.40/7,282.88 = 3,285.78/x
  3. Step 3: Cross multiply
    5,276.40x = 7,282.88 × 3,285.78
  4. Step 4: Simplify right side
    5,276.40x = 23,929,943.22
  5. Step 5: Solve for x
    x = 23,929,943.22/5,276.40
  6. Step 6: Final answer
    x = 4,535.28

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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.