Home / 2,877.30-4,286.98-2,688.70

Finding the Fourth Proportional to 2,877.30, 4,286.98 and 2,688.70

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Solution

The fourth proportional to 2,877.30, 4,286.98 and 2,688.70 is: 4,005.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,877.30 : 4,286.98 = 2,688.70 : x
  2. Step 2: Convert to fraction form
    2,877.30/4,286.98 = 2,688.70/x
  3. Step 3: Cross multiply
    2,877.30x = 4,286.98 × 2,688.70
  4. Step 4: Simplify right side
    2,877.30x = 11,526,403.13
  5. Step 5: Solve for x
    x = 11,526,403.13/2,877.30
  6. Step 6: Final answer
    x = 4,005.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.