Home / 9,987.90-13,784.14-5,795.88

Finding the Fourth Proportional to 9,987.90, 13,784.14 and 5,795.88

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Solution

The fourth proportional to 9,987.90, 13,784.14 and 5,795.88 is: 7,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,987.90 : 13,784.14 = 5,795.88 : x
  2. Step 2: Convert to fraction form
    9,987.90/13,784.14 = 5,795.88/x
  3. Step 3: Cross multiply
    9,987.90x = 13,784.14 × 5,795.88
  4. Step 4: Simplify right side
    9,987.90x = 79,891,221.34
  5. Step 5: Solve for x
    x = 79,891,221.34/9,987.90
  6. Step 6: Final answer
    x = 7,998.80

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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.