Home / 2,876.45-4,315.10-1,415.70

Finding the Fourth Proportional to 2,876.45, 4,315.10 and 1,415.70

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Solution

The fourth proportional to 2,876.45, 4,315.10 and 1,415.70 is: 2,123.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,876.45 : 4,315.10 = 1,415.70 : x
  2. Step 2: Convert to fraction form
    2,876.45/4,315.10 = 1,415.70/x
  3. Step 3: Cross multiply
    2,876.45x = 4,315.10 × 1,415.70
  4. Step 4: Simplify right side
    2,876.45x = 6,108,887.07
  5. Step 5: Solve for x
    x = 6,108,887.07/2,876.45
  6. Step 6: Final answer
    x = 2,123.76

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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.