Home / 1,531.34-2,115.16-1,508.30

Finding the Fourth Proportional to 1,531.34, 2,115.16 and 1,508.30

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Solution

The fourth proportional to 1,531.34, 2,115.16 and 1,508.30 is: 2,083.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,531.34 : 2,115.16 = 1,508.30 : x
  2. Step 2: Convert to fraction form
    1,531.34/2,115.16 = 1,508.30/x
  3. Step 3: Cross multiply
    1,531.34x = 2,115.16 × 1,508.30
  4. Step 4: Simplify right side
    1,531.34x = 3,190,295.83
  5. Step 5: Solve for x
    x = 3,190,295.83/1,531.34
  6. Step 6: Final answer
    x = 2,083.34

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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.