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Finding the Fourth Proportional to 3,988.40, 6,020.05 and 3,988.40

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Solution

The fourth proportional to 3,988.40, 6,020.05 and 3,988.40 is: 6,020.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.40 : 6,020.05 = 3,988.40 : x
  2. Step 2: Convert to fraction form
    3,988.40/6,020.05 = 3,988.40/x
  3. Step 3: Cross multiply
    3,988.40x = 6,020.05 × 3,988.40
  4. Step 4: Simplify right side
    3,988.40x = 24,010,327.35
  5. Step 5: Solve for x
    x = 24,010,327.35/3,988.40
  6. Step 6: Final answer
    x = 6,020.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.