Home / 3,109.93-4,291.70-1,712.68

Finding the Fourth Proportional to 3,109.93, 4,291.70 and 1,712.68

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Solution

The fourth proportional to 3,109.93, 4,291.70 and 1,712.68 is: 2,363.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.93 : 4,291.70 = 1,712.68 : x
  2. Step 2: Convert to fraction form
    3,109.93/4,291.70 = 1,712.68/x
  3. Step 3: Cross multiply
    3,109.93x = 4,291.70 × 1,712.68
  4. Step 4: Simplify right side
    3,109.93x = 7,350,308.76
  5. Step 5: Solve for x
    x = 7,350,308.76/3,109.93
  6. Step 6: Final answer
    x = 2,363.50

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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.