Home / 9,987.44-13,782.12-5,735.52

Finding the Fourth Proportional to 9,987.44, 13,782.12 and 5,735.52

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Solution

The fourth proportional to 9,987.44, 13,782.12 and 5,735.52 is: 7,914.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,987.44 : 13,782.12 = 5,735.52 : x
  2. Step 2: Convert to fraction form
    9,987.44/13,782.12 = 5,735.52/x
  3. Step 3: Cross multiply
    9,987.44x = 13,782.12 × 5,735.52
  4. Step 4: Simplify right side
    9,987.44x = 79,047,624.90
  5. Step 5: Solve for x
    x = 79,047,624.90/9,987.44
  6. Step 6: Final answer
    x = 7,914.70

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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.