Home / 5,278.53-7,287.81-3,390.84

Finding the Fourth Proportional to 5,278.53, 7,287.81 and 3,390.84

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Solution

The fourth proportional to 5,278.53, 7,287.81 and 3,390.84 is: 4,681.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.53 : 7,287.81 = 3,390.84 : x
  2. Step 2: Convert to fraction form
    5,278.53/7,287.81 = 3,390.84/x
  3. Step 3: Cross multiply
    5,278.53x = 7,287.81 × 3,390.84
  4. Step 4: Simplify right side
    5,278.53x = 24,711,797.66
  5. Step 5: Solve for x
    x = 24,711,797.66/5,278.53
  6. Step 6: Final answer
    x = 4,681.57

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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.