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Finding the Fourth Proportional to 6,604.06, 9,907.80 and 1,987.06

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Solution

The fourth proportional to 6,604.06, 9,907.80 and 1,987.06 is: 2,981.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,604.06 : 9,907.80 = 1,987.06 : x
  2. Step 2: Convert to fraction form
    6,604.06/9,907.80 = 1,987.06/x
  3. Step 3: Cross multiply
    6,604.06x = 9,907.80 × 1,987.06
  4. Step 4: Simplify right side
    6,604.06x = 19,687,393.07
  5. Step 5: Solve for x
    x = 19,687,393.07/6,604.06
  6. Step 6: Final answer
    x = 2,981.10

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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.