Home / 1,576.32-2,175.42-913.38

Finding the Fourth Proportional to 1,576.32, 2,175.42 and 913.38

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Solution

The fourth proportional to 1,576.32, 2,175.42 and 913.38 is: 1,260.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,576.32 : 2,175.42 = 913.38 : x
  2. Step 2: Convert to fraction form
    1,576.32/2,175.42 = 913.38/x
  3. Step 3: Cross multiply
    1,576.32x = 2,175.42 × 913.38
  4. Step 4: Simplify right side
    1,576.32x = 1,986,985.12
  5. Step 5: Solve for x
    x = 1,986,985.12/1,576.32
  6. Step 6: Final answer
    x = 1,260.52

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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.