Home / 5,112.12-7,048.98-3,617.40

Finding the Fourth Proportional to 5,112.12, 7,048.98 and 3,617.40

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Solution

The fourth proportional to 5,112.12, 7,048.98 and 3,617.40 is: 4,987.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,112.12 : 7,048.98 = 3,617.40 : x
  2. Step 2: Convert to fraction form
    5,112.12/7,048.98 = 3,617.40/x
  3. Step 3: Cross multiply
    5,112.12x = 7,048.98 × 3,617.40
  4. Step 4: Simplify right side
    5,112.12x = 25,498,980.25
  5. Step 5: Solve for x
    x = 25,498,980.25/5,112.12
  6. Step 6: Final answer
    x = 4,987.95

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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.