Home / 2,877.90-3,971.61-1,618.94

Finding the Fourth Proportional to 2,877.90, 3,971.61 and 1,618.94

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Solution

The fourth proportional to 2,877.90, 3,971.61 and 1,618.94 is: 2,234.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,877.90 : 3,971.61 = 1,618.94 : x
  2. Step 2: Convert to fraction form
    2,877.90/3,971.61 = 1,618.94/x
  3. Step 3: Cross multiply
    2,877.90x = 3,971.61 × 1,618.94
  4. Step 4: Simplify right side
    2,877.90x = 6,429,808.22
  5. Step 5: Solve for x
    x = 6,429,808.22/2,877.90
  6. Step 6: Final answer
    x = 2,234.20

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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.