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Finding the Fourth Proportional to 2,902.77, 4,328.64 and 2,876.45

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Solution

The fourth proportional to 2,902.77, 4,328.64 and 2,876.45 is: 4,289.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,902.77 : 4,328.64 = 2,876.45 : x
  2. Step 2: Convert to fraction form
    2,902.77/4,328.64 = 2,876.45/x
  3. Step 3: Cross multiply
    2,902.77x = 4,328.64 × 2,876.45
  4. Step 4: Simplify right side
    2,902.77x = 12,451,094.88
  5. Step 5: Solve for x
    x = 12,451,094.88/2,902.77
  6. Step 6: Final answer
    x = 4,289.38

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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.