Home / 3,138.30-4,707.20-1,058.26

Finding the Fourth Proportional to 3,138.30, 4,707.20 and 1,058.26

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Solution

The fourth proportional to 3,138.30, 4,707.20 and 1,058.26 is: 1,587.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.30 : 4,707.20 = 1,058.26 : x
  2. Step 2: Convert to fraction form
    3,138.30/4,707.20 = 1,058.26/x
  3. Step 3: Cross multiply
    3,138.30x = 4,707.20 × 1,058.26
  4. Step 4: Simplify right side
    3,138.30x = 4,981,436.18
  5. Step 5: Solve for x
    x = 4,981,436.18/3,138.30
  6. Step 6: Final answer
    x = 1,587.30

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1.5x scale

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.