Home / 2,159.58-2,979.42-1,274.76

Finding the Fourth Proportional to 2,159.58, 2,979.42 and 1,274.76

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Solution

The fourth proportional to 2,159.58, 2,979.42 and 1,274.76 is: 1,758.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,159.58 : 2,979.42 = 1,274.76 : x
  2. Step 2: Convert to fraction form
    2,159.58/2,979.42 = 1,274.76/x
  3. Step 3: Cross multiply
    2,159.58x = 2,979.42 × 1,274.76
  4. Step 4: Simplify right side
    2,159.58x = 3,798,045.44
  5. Step 5: Solve for x
    x = 3,798,045.44/2,159.58
  6. Step 6: Final answer
    x = 1,758.70

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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.