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Finding the Fourth Proportional to 12,292.40, 18,438.56 and 3,058.40

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Solution

The fourth proportional to 12,292.40, 18,438.56 and 3,058.40 is: 4,587.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,292.40 : 18,438.56 = 3,058.40 : x
  2. Step 2: Convert to fraction form
    12,292.40/18,438.56 = 3,058.40/x
  3. Step 3: Cross multiply
    12,292.40x = 18,438.56 × 3,058.40
  4. Step 4: Simplify right side
    12,292.40x = 56,392,491.90
  5. Step 5: Solve for x
    x = 56,392,491.90/12,292.40
  6. Step 6: Final answer
    x = 4,587.59

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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.