Home / 2,977.13-4,107.43-1,929.40

Finding the Fourth Proportional to 2,977.13, 4,107.43 and 1,929.40

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Solution

The fourth proportional to 2,977.13, 4,107.43 and 1,929.40 is: 2,661.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,977.13 : 4,107.43 = 1,929.40 : x
  2. Step 2: Convert to fraction form
    2,977.13/4,107.43 = 1,929.40/x
  3. Step 3: Cross multiply
    2,977.13x = 4,107.43 × 1,929.40
  4. Step 4: Simplify right side
    2,977.13x = 7,924,875.44
  5. Step 5: Solve for x
    x = 7,924,875.44/2,977.13
  6. Step 6: Final answer
    x = 2,661.92

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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.