Home / 2,159.26-2,979.89-1,415.21

Finding the Fourth Proportional to 2,159.26, 2,979.89 and 1,415.21

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Solution

The fourth proportional to 2,159.26, 2,979.89 and 1,415.21 is: 1,953.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,159.26 : 2,979.89 = 1,415.21 : x
  2. Step 2: Convert to fraction form
    2,159.26/2,979.89 = 1,415.21/x
  3. Step 3: Cross multiply
    2,159.26x = 2,979.89 × 1,415.21
  4. Step 4: Simplify right side
    2,159.26x = 4,217,153.46
  5. Step 5: Solve for x
    x = 4,217,153.46/2,159.26
  6. Step 6: Final answer
    x = 1,953.06

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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.