Home / 1,576.91-2,175.10-986.42

Finding the Fourth Proportional to 1,576.91, 2,175.10 and 986.42

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Solution

The fourth proportional to 1,576.91, 2,175.10 and 986.42 is: 1,360.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,576.91 : 2,175.10 = 986.42 : x
  2. Step 2: Convert to fraction form
    1,576.91/2,175.10 = 986.42/x
  3. Step 3: Cross multiply
    1,576.91x = 2,175.10 × 986.42
  4. Step 4: Simplify right side
    1,576.91x = 2,145,565.11
  5. Step 5: Solve for x
    x = 2,145,565.11/1,576.91
  6. Step 6: Final answer
    x = 1,360.61

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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.