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Finding the Fourth Proportional to 5,020.40, 6,927.43 and 2,782.40

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Solution

The fourth proportional to 5,020.40, 6,927.43 and 2,782.40 is: 3,839.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,020.40 : 6,927.43 = 2,782.40 : x
  2. Step 2: Convert to fraction form
    5,020.40/6,927.43 = 2,782.40/x
  3. Step 3: Cross multiply
    5,020.40x = 6,927.43 × 2,782.40
  4. Step 4: Simplify right side
    5,020.40x = 19,274,881.23
  5. Step 5: Solve for x
    x = 19,274,881.23/5,020.40
  6. Step 6: Final answer
    x = 3,839.31

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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.