Home / 2,158.11-2,979.33-1,529.16

Finding the Fourth Proportional to 2,158.11, 2,979.33 and 1,529.16

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Solution

The fourth proportional to 2,158.11, 2,979.33 and 1,529.16 is: 2,111.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158.11 : 2,979.33 = 1,529.16 : x
  2. Step 2: Convert to fraction form
    2,158.11/2,979.33 = 1,529.16/x
  3. Step 3: Cross multiply
    2,158.11x = 2,979.33 × 1,529.16
  4. Step 4: Simplify right side
    2,158.11x = 4,555,872.26
  5. Step 5: Solve for x
    x = 4,555,872.26/2,158.11
  6. Step 6: Final answer
    x = 2,111.05

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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.