Home / 6,985.66-9,637.47-3,999.89

Finding the Fourth Proportional to 6,985.66, 9,637.47 and 3,999.89

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Solution

The fourth proportional to 6,985.66, 9,637.47 and 3,999.89 is: 5,518.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,985.66 : 9,637.47 = 3,999.89 : x
  2. Step 2: Convert to fraction form
    6,985.66/9,637.47 = 3,999.89/x
  3. Step 3: Cross multiply
    6,985.66x = 9,637.47 × 3,999.89
  4. Step 4: Simplify right side
    6,985.66x = 38,548,781.69
  5. Step 5: Solve for x
    x = 38,548,781.69/6,985.66
  6. Step 6: Final answer
    x = 5,518.28

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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.