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Finding the Fourth Proportional to 2,875.70, 4,318.41 and 1,876.72

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Solution

The fourth proportional to 2,875.70, 4,318.41 and 1,876.72 is: 2,818.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,875.70 : 4,318.41 = 1,876.72 : x
  2. Step 2: Convert to fraction form
    2,875.70/4,318.41 = 1,876.72/x
  3. Step 3: Cross multiply
    2,875.70x = 4,318.41 × 1,876.72
  4. Step 4: Simplify right side
    2,875.70x = 8,104,450.75
  5. Step 5: Solve for x
    x = 8,104,450.75/2,875.70
  6. Step 6: Final answer
    x = 2,818.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.