Home / 6,985.72-9,637.56-3,999.96

Finding the Fourth Proportional to 6,985.72, 9,637.56 and 3,999.96

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Solution

The fourth proportional to 6,985.72, 9,637.56 and 3,999.96 is: 5,518.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,985.72 : 9,637.56 = 3,999.96 : x
  2. Step 2: Convert to fraction form
    6,985.72/9,637.56 = 3,999.96/x
  3. Step 3: Cross multiply
    6,985.72x = 9,637.56 × 3,999.96
  4. Step 4: Simplify right side
    6,985.72x = 38,549,806.31
  5. Step 5: Solve for x
    x = 38,549,806.31/6,985.72
  6. Step 6: Final answer
    x = 5,518.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.