Home / 2,810.10-3,877.92-1,631.40

Finding the Fourth Proportional to 2,810.10, 3,877.92 and 1,631.40

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Solution

The fourth proportional to 2,810.10, 3,877.92 and 1,631.40 is: 2,251.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,810.10 : 3,877.92 = 1,631.40 : x
  2. Step 2: Convert to fraction form
    2,810.10/3,877.92 = 1,631.40/x
  3. Step 3: Cross multiply
    2,810.10x = 3,877.92 × 1,631.40
  4. Step 4: Simplify right side
    2,810.10x = 6,326,438.69
  5. Step 5: Solve for x
    x = 6,326,438.69/2,810.10
  6. Step 6: Final answer
    x = 2,251.32

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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.