Home / 2,086.91-3,130.95-1,045.65

Finding the Fourth Proportional to 2,086.91, 3,130.95 and 1,045.65

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Solution

The fourth proportional to 2,086.91, 3,130.95 and 1,045.65 is: 1,568.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,086.91 : 3,130.95 = 1,045.65 : x
  2. Step 2: Convert to fraction form
    2,086.91/3,130.95 = 1,045.65/x
  3. Step 3: Cross multiply
    2,086.91x = 3,130.95 × 1,045.65
  4. Step 4: Simplify right side
    2,086.91x = 3,273,872.64
  5. Step 5: Solve for x
    x = 3,273,872.64/2,086.91
  6. Step 6: Final answer
    x = 1,568.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.