Home / 1,578.71-2,352.67-1,531.20

Finding the Fourth Proportional to 1,578.71, 2,352.67 and 1,531.20

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Solution

The fourth proportional to 1,578.71, 2,352.67 and 1,531.20 is: 2,281.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,578.71 : 2,352.67 = 1,531.20 : x
  2. Step 2: Convert to fraction form
    1,578.71/2,352.67 = 1,531.20/x
  3. Step 3: Cross multiply
    1,578.71x = 2,352.67 × 1,531.20
  4. Step 4: Simplify right side
    1,578.71x = 3,602,404.48
  5. Step 5: Solve for x
    x = 3,602,404.48/1,578.71
  6. Step 6: Final answer
    x = 2,281.87

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.