Home / 5,278.55-7,284.59-2,888.69

Finding the Fourth Proportional to 5,278.55, 7,284.59 and 2,888.69

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Solution

The fourth proportional to 5,278.55, 7,284.59 and 2,888.69 is: 3,986.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.55 : 7,284.59 = 2,888.69 : x
  2. Step 2: Convert to fraction form
    5,278.55/7,284.59 = 2,888.69/x
  3. Step 3: Cross multiply
    5,278.55x = 7,284.59 × 2,888.69
  4. Step 4: Simplify right side
    5,278.55x = 21,042,871.42
  5. Step 5: Solve for x
    x = 21,042,871.42/5,278.55
  6. Step 6: Final answer
    x = 3,986.49

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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.