Home / 7,987.72-11,020.44-4,842.76

Finding the Fourth Proportional to 7,987.72, 11,020.44 and 4,842.76

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Solution

The fourth proportional to 7,987.72, 11,020.44 and 4,842.76 is: 6,681.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,987.72 : 11,020.44 = 4,842.76 : x
  2. Step 2: Convert to fraction form
    7,987.72/11,020.44 = 4,842.76/x
  3. Step 3: Cross multiply
    7,987.72x = 11,020.44 × 4,842.76
  4. Step 4: Simplify right side
    7,987.72x = 53,369,346.01
  5. Step 5: Solve for x
    x = 53,369,346.01/7,987.72
  6. Step 6: Final answer
    x = 6,681.42

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Double scale
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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.