Home / 2,810.31-3,875.90-2,110.47

Finding the Fourth Proportional to 2,810.31, 3,875.90 and 2,110.47

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Solution

The fourth proportional to 2,810.31, 3,875.90 and 2,110.47 is: 2,910.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,810.31 : 3,875.90 = 2,110.47 : x
  2. Step 2: Convert to fraction form
    2,810.31/3,875.90 = 2,110.47/x
  3. Step 3: Cross multiply
    2,810.31x = 3,875.90 × 2,110.47
  4. Step 4: Simplify right side
    2,810.31x = 8,179,960.12
  5. Step 5: Solve for x
    x = 8,179,960.12/2,810.31
  6. Step 6: Final answer
    x = 2,910.70

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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.