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Finding the Fourth Proportional to 2,876.70, 4,280.60 and 2,866.98

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Solution

The fourth proportional to 2,876.70, 4,280.60 and 2,866.98 is: 4,266.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,876.70 : 4,280.60 = 2,866.98 : x
  2. Step 2: Convert to fraction form
    2,876.70/4,280.60 = 2,866.98/x
  3. Step 3: Cross multiply
    2,876.70x = 4,280.60 × 2,866.98
  4. Step 4: Simplify right side
    2,876.70x = 12,272,380.25
  5. Step 5: Solve for x
    x = 12,272,380.25/2,876.70
  6. Step 6: Final answer
    x = 4,266.13

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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.