Home / 4,187.76-5,778.70-2,419.12

Finding the Fourth Proportional to 4,187.76, 5,778.70 and 2,419.12

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Solution

The fourth proportional to 4,187.76, 5,778.70 and 2,419.12 is: 3,338.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,187.76 : 5,778.70 = 2,419.12 : x
  2. Step 2: Convert to fraction form
    4,187.76/5,778.70 = 2,419.12/x
  3. Step 3: Cross multiply
    4,187.76x = 5,778.70 × 2,419.12
  4. Step 4: Simplify right side
    4,187.76x = 13,979,368.74
  5. Step 5: Solve for x
    x = 13,979,368.74/4,187.76
  6. Step 6: Final answer
    x = 3,338.15

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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.