Home / 8,190.40-11,303.05-4,654.21

Finding the Fourth Proportional to 8,190.40, 11,303.05 and 4,654.21

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Solution

The fourth proportional to 8,190.40, 11,303.05 and 4,654.21 is: 6,422.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,190.40 : 11,303.05 = 4,654.21 : x
  2. Step 2: Convert to fraction form
    8,190.40/11,303.05 = 4,654.21/x
  3. Step 3: Cross multiply
    8,190.40x = 11,303.05 × 4,654.21
  4. Step 4: Simplify right side
    8,190.40x = 52,606,768.34
  5. Step 5: Solve for x
    x = 52,606,768.34/8,190.40
  6. Step 6: Final answer
    x = 6,422.98

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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.