Home / 1,576.22-2,175.17-912.96

Finding the Fourth Proportional to 1,576.22, 2,175.17 and 912.96

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Solution

The fourth proportional to 1,576.22, 2,175.17 and 912.96 is: 1,259.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,576.22 : 2,175.17 = 912.96 : x
  2. Step 2: Convert to fraction form
    1,576.22/2,175.17 = 912.96/x
  3. Step 3: Cross multiply
    1,576.22x = 2,175.17 × 912.96
  4. Step 4: Simplify right side
    1,576.22x = 1,985,838.64
  5. Step 5: Solve for x
    x = 1,985,838.64/1,576.22
  6. Step 6: Final answer
    x = 1,259.88

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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.