Home / 8,430.80-11,634.56-4,654.09

Finding the Fourth Proportional to 8,430.80, 11,634.56 and 4,654.09

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Solution

The fourth proportional to 8,430.80, 11,634.56 and 4,654.09 is: 6,422.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,430.80 : 11,634.56 = 4,654.09 : x
  2. Step 2: Convert to fraction form
    8,430.80/11,634.56 = 4,654.09/x
  3. Step 3: Cross multiply
    8,430.80x = 11,634.56 × 4,654.09
  4. Step 4: Simplify right side
    8,430.80x = 54,148,271.90
  5. Step 5: Solve for x
    x = 54,148,271.90/8,430.80
  6. Step 6: Final answer
    x = 6,422.67

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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.