Home / 6,985.54-9,637.31-3,999.79

Finding the Fourth Proportional to 6,985.54, 9,637.31 and 3,999.79

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Solution

The fourth proportional to 6,985.54, 9,637.31 and 3,999.79 is: 5,518.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,985.54 : 9,637.31 = 3,999.79 : x
  2. Step 2: Convert to fraction form
    6,985.54/9,637.31 = 3,999.79/x
  3. Step 3: Cross multiply
    6,985.54x = 9,637.31 × 3,999.79
  4. Step 4: Simplify right side
    6,985.54x = 38,547,147.98
  5. Step 5: Solve for x
    x = 38,547,147.98/6,985.54
  6. Step 6: Final answer
    x = 5,518.14

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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.