Home / 6,664.85-9,996.36-1,985.58

Finding the Fourth Proportional to 6,664.85, 9,996.36 and 1,985.58

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Solution

The fourth proportional to 6,664.85, 9,996.36 and 1,985.58 is: 2,978.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,664.85 : 9,996.36 = 1,985.58 : x
  2. Step 2: Convert to fraction form
    6,664.85/9,996.36 = 1,985.58/x
  3. Step 3: Cross multiply
    6,664.85x = 9,996.36 × 1,985.58
  4. Step 4: Simplify right side
    6,664.85x = 19,848,572.49
  5. Step 5: Solve for x
    x = 19,848,572.49/6,664.85
  6. Step 6: Final answer
    x = 2,978.10

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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.