Home / 6,666.84-9,996.66-1,986.18

Finding the Fourth Proportional to 6,666.84, 9,996.66 and 1,986.18

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Solution

The fourth proportional to 6,666.84, 9,996.66 and 1,986.18 is: 2,978.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,666.84 : 9,996.66 = 1,986.18 : x
  2. Step 2: Convert to fraction form
    6,666.84/9,996.66 = 1,986.18/x
  3. Step 3: Cross multiply
    6,666.84x = 9,996.66 × 1,986.18
  4. Step 4: Simplify right side
    6,666.84x = 19,855,166.16
  5. Step 5: Solve for x
    x = 19,855,166.16/6,666.84
  6. Step 6: Final answer
    x = 2,978.20

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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.