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Finding the Fourth Proportional to 6,159.80, 9,218.10 and 4,302.20

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Solution

The fourth proportional to 6,159.80, 9,218.10 and 4,302.20 is: 6,438.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,159.80 : 9,218.10 = 4,302.20 : x
  2. Step 2: Convert to fraction form
    6,159.80/9,218.10 = 4,302.20/x
  3. Step 3: Cross multiply
    6,159.80x = 9,218.10 × 4,302.20
  4. Step 4: Simplify right side
    6,159.80x = 39,658,109.82
  5. Step 5: Solve for x
    x = 39,658,109.82/6,159.80
  6. Step 6: Final answer
    x = 6,438.21

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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.