Home / 3,118.38-4,302.36-2,070.65

Finding the Fourth Proportional to 3,118.38, 4,302.36 and 2,070.65

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Solution

The fourth proportional to 3,118.38, 4,302.36 and 2,070.65 is: 2,856.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.38 : 4,302.36 = 2,070.65 : x
  2. Step 2: Convert to fraction form
    3,118.38/4,302.36 = 2,070.65/x
  3. Step 3: Cross multiply
    3,118.38x = 4,302.36 × 2,070.65
  4. Step 4: Simplify right side
    3,118.38x = 8,908,660.22
  5. Step 5: Solve for x
    x = 8,908,660.22/3,118.38
  6. Step 6: Final answer
    x = 2,856.82

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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.