Home / 3,109.93-4,291.58-1,783.76

Finding the Fourth Proportional to 3,109.93, 4,291.58 and 1,783.76

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Solution

The fourth proportional to 3,109.93, 4,291.58 and 1,783.76 is: 2,461.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.93 : 4,291.58 = 1,783.76 : x
  2. Step 2: Convert to fraction form
    3,109.93/4,291.58 = 1,783.76/x
  3. Step 3: Cross multiply
    3,109.93x = 4,291.58 × 1,783.76
  4. Step 4: Simplify right side
    3,109.93x = 7,655,131.74
  5. Step 5: Solve for x
    x = 7,655,131.74/3,109.93
  6. Step 6: Final answer
    x = 2,461.51

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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.