Home / 5,020.71-6,928.48-2,782.57

Finding the Fourth Proportional to 5,020.71, 6,928.48 and 2,782.57

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Solution

The fourth proportional to 5,020.71, 6,928.48 and 2,782.57 is: 3,839.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,020.71 : 6,928.48 = 2,782.57 : x
  2. Step 2: Convert to fraction form
    5,020.71/6,928.48 = 2,782.57/x
  3. Step 3: Cross multiply
    5,020.71x = 6,928.48 × 2,782.57
  4. Step 4: Simplify right side
    5,020.71x = 19,278,980.59
  5. Step 5: Solve for x
    x = 19,278,980.59/5,020.71
  6. Step 6: Final answer
    x = 3,839.89

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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.