Home / 1,576.45-2,175.42-913.47

Finding the Fourth Proportional to 1,576.45, 2,175.42 and 913.47

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Solution

The fourth proportional to 1,576.45, 2,175.42 and 913.47 is: 1,260.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,576.45 : 2,175.42 = 913.47 : x
  2. Step 2: Convert to fraction form
    1,576.45/2,175.42 = 913.47/x
  3. Step 3: Cross multiply
    1,576.45x = 2,175.42 × 913.47
  4. Step 4: Simplify right side
    1,576.45x = 1,987,180.91
  5. Step 5: Solve for x
    x = 1,987,180.91/1,576.45
  6. Step 6: Final answer
    x = 1,260.54

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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.