Home / 1,541.46-2,312.16-387.21

Finding the Fourth Proportional to 1,541.46, 2,312.16 and 387.21

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Solution

The fourth proportional to 1,541.46, 2,312.16 and 387.21 is: 580.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,541.46 : 2,312.16 = 387.21 : x
  2. Step 2: Convert to fraction form
    1,541.46/2,312.16 = 387.21/x
  3. Step 3: Cross multiply
    1,541.46x = 2,312.16 × 387.21
  4. Step 4: Simplify right side
    1,541.46x = 895,291.47
  5. Step 5: Solve for x
    x = 895,291.47/1,541.46
  6. Step 6: Final answer
    x = 580.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.