Home / 4,278.20-6,411.90-1,935.68

Finding the Fourth Proportional to 4,278.20, 6,411.90 and 1,935.68

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Solution

The fourth proportional to 4,278.20, 6,411.90 and 1,935.68 is: 2,901.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,278.20 : 6,411.90 = 1,935.68 : x
  2. Step 2: Convert to fraction form
    4,278.20/6,411.90 = 1,935.68/x
  3. Step 3: Cross multiply
    4,278.20x = 6,411.90 × 1,935.68
  4. Step 4: Simplify right side
    4,278.20x = 12,411,386.59
  5. Step 5: Solve for x
    x = 12,411,386.59/4,278.20
  6. Step 6: Final answer
    x = 2,901.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.