Home / 5,107.02-7,048.45-3,118.72

Finding the Fourth Proportional to 5,107.02, 7,048.45 and 3,118.72

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Solution

The fourth proportional to 5,107.02, 7,048.45 and 3,118.72 is: 4,304.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,107.02 : 7,048.45 = 3,118.72 : x
  2. Step 2: Convert to fraction form
    5,107.02/7,048.45 = 3,118.72/x
  3. Step 3: Cross multiply
    5,107.02x = 7,048.45 × 3,118.72
  4. Step 4: Simplify right side
    5,107.02x = 21,982,141.98
  5. Step 5: Solve for x
    x = 21,982,141.98/5,107.02
  6. Step 6: Final answer
    x = 4,304.30

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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.