Home / 2,112.08-3,165.38-1,417.70

Finding the Fourth Proportional to 2,112.08, 3,165.38 and 1,417.70

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Solution

The fourth proportional to 2,112.08, 3,165.38 and 1,417.70 is: 2,124.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,112.08 : 3,165.38 = 1,417.70 : x
  2. Step 2: Convert to fraction form
    2,112.08/3,165.38 = 1,417.70/x
  3. Step 3: Cross multiply
    2,112.08x = 3,165.38 × 1,417.70
  4. Step 4: Simplify right side
    2,112.08x = 4,487,565.37
  5. Step 5: Solve for x
    x = 4,487,565.37/2,112.08
  6. Step 6: Final answer
    x = 2,124.72

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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.