Home / 2,159.08-2,979.32-1,214.85

Finding the Fourth Proportional to 2,159.08, 2,979.32 and 1,214.85

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Solution

The fourth proportional to 2,159.08, 2,979.32 and 1,214.85 is: 1,676.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,159.08 : 2,979.32 = 1,214.85 : x
  2. Step 2: Convert to fraction form
    2,159.08/2,979.32 = 1,214.85/x
  3. Step 3: Cross multiply
    2,159.08x = 2,979.32 × 1,214.85
  4. Step 4: Simplify right side
    2,159.08x = 3,619,420.83
  5. Step 5: Solve for x
    x = 3,619,420.83/2,159.08
  6. Step 6: Final answer
    x = 1,676.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.