Home / 5,108.52-7,047.75-3,118.35

Finding the Fourth Proportional to 5,108.52, 7,047.75 and 3,118.35

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Solution

The fourth proportional to 5,108.52, 7,047.75 and 3,118.35 is: 4,302.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,108.52 : 7,047.75 = 3,118.35 : x
  2. Step 2: Convert to fraction form
    5,108.52/7,047.75 = 3,118.35/x
  3. Step 3: Cross multiply
    5,108.52x = 7,047.75 × 3,118.35
  4. Step 4: Simplify right side
    5,108.52x = 21,977,351.21
  5. Step 5: Solve for x
    x = 21,977,351.21/5,108.52
  6. Step 6: Final answer
    x = 4,302.10

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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.