Home / 7,140.08-9,852.36-3,996.20

Finding the Fourth Proportional to 7,140.08, 9,852.36 and 3,996.20

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Solution

The fourth proportional to 7,140.08, 9,852.36 and 3,996.20 is: 5,514.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.08 : 9,852.36 = 3,996.20 : x
  2. Step 2: Convert to fraction form
    7,140.08/9,852.36 = 3,996.20/x
  3. Step 3: Cross multiply
    7,140.08x = 9,852.36 × 3,996.20
  4. Step 4: Simplify right side
    7,140.08x = 39,372,001.03
  5. Step 5: Solve for x
    x = 39,372,001.03/7,140.08
  6. Step 6: Final answer
    x = 5,514.22

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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.