Home / 1,576.74-2,175.65-913.62

Finding the Fourth Proportional to 1,576.74, 2,175.65 and 913.62

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Solution

The fourth proportional to 1,576.74, 2,175.65 and 913.62 is: 1,260.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,576.74 : 2,175.65 = 913.62 : x
  2. Step 2: Convert to fraction form
    1,576.74/2,175.65 = 913.62/x
  3. Step 3: Cross multiply
    1,576.74x = 2,175.65 × 913.62
  4. Step 4: Simplify right side
    1,576.74x = 1,987,717.35
  5. Step 5: Solve for x
    x = 1,987,717.35/1,576.74
  6. Step 6: Final answer
    x = 1,260.65

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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.