Home / 7,980.56-11,001.76-5,615.36

Finding the Fourth Proportional to 7,980.56, 11,001.76 and 5,615.36

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Solution

The fourth proportional to 7,980.56, 11,001.76 and 5,615.36 is: 7,741.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980.56 : 11,001.76 = 5,615.36 : x
  2. Step 2: Convert to fraction form
    7,980.56/11,001.76 = 5,615.36/x
  3. Step 3: Cross multiply
    7,980.56x = 11,001.76 × 5,615.36
  4. Step 4: Simplify right side
    7,980.56x = 61,778,843.03
  5. Step 5: Solve for x
    x = 61,778,843.03/7,980.56
  6. Step 6: Final answer
    x = 7,741.17

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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.