Home / 2,956.13-4,081.10-2,158.65

Finding the Fourth Proportional to 2,956.13, 4,081.10 and 2,158.65

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Solution

The fourth proportional to 2,956.13, 4,081.10 and 2,158.65 is: 2,980.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,956.13 : 4,081.10 = 2,158.65 : x
  2. Step 2: Convert to fraction form
    2,956.13/4,081.10 = 2,158.65/x
  3. Step 3: Cross multiply
    2,956.13x = 4,081.10 × 2,158.65
  4. Step 4: Simplify right side
    2,956.13x = 8,809,666.52
  5. Step 5: Solve for x
    x = 8,809,666.52/2,956.13
  6. Step 6: Final answer
    x = 2,980.14

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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.