Home / 3,109.75-4,291.46-1,712.50

Finding the Fourth Proportional to 3,109.75, 4,291.46 and 1,712.50

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Solution

The fourth proportional to 3,109.75, 4,291.46 and 1,712.50 is: 2,363.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.75 : 4,291.46 = 1,712.50 : x
  2. Step 2: Convert to fraction form
    3,109.75/4,291.46 = 1,712.50/x
  3. Step 3: Cross multiply
    3,109.75x = 4,291.46 × 1,712.50
  4. Step 4: Simplify right side
    3,109.75x = 7,349,125.25
  5. Step 5: Solve for x
    x = 7,349,125.25/3,109.75
  6. Step 6: Final answer
    x = 2,363.25

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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.