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Finding the Fourth Proportional to 8,972.88, 13,460.22 and 3,430.89

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Solution

The fourth proportional to 8,972.88, 13,460.22 and 3,430.89 is: 5,146.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,972.88 : 13,460.22 = 3,430.89 : x
  2. Step 2: Convert to fraction form
    8,972.88/13,460.22 = 3,430.89/x
  3. Step 3: Cross multiply
    8,972.88x = 13,460.22 × 3,430.89
  4. Step 4: Simplify right side
    8,972.88x = 46,180,449.74
  5. Step 5: Solve for x
    x = 46,180,449.74/8,972.88
  6. Step 6: Final answer
    x = 5,146.67

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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.