Home / 3,419.80-4,719.40-1,927.76

Finding the Fourth Proportional to 3,419.80, 4,719.40 and 1,927.76

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Solution

The fourth proportional to 3,419.80, 4,719.40 and 1,927.76 is: 2,660.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,419.80 : 4,719.40 = 1,927.76 : x
  2. Step 2: Convert to fraction form
    3,419.80/4,719.40 = 1,927.76/x
  3. Step 3: Cross multiply
    3,419.80x = 4,719.40 × 1,927.76
  4. Step 4: Simplify right side
    3,419.80x = 9,097,870.54
  5. Step 5: Solve for x
    x = 9,097,870.54/3,419.80
  6. Step 6: Final answer
    x = 2,660.35

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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.