Home / 9,987.89-13,783.03-5,511.58

Finding the Fourth Proportional to 9,987.89, 13,783.03 and 5,511.58

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Solution

The fourth proportional to 9,987.89, 13,783.03 and 5,511.58 is: 7,605.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,987.89 : 13,783.03 = 5,511.58 : x
  2. Step 2: Convert to fraction form
    9,987.89/13,783.03 = 5,511.58/x
  3. Step 3: Cross multiply
    9,987.89x = 13,783.03 × 5,511.58
  4. Step 4: Simplify right side
    9,987.89x = 75,966,224.25
  5. Step 5: Solve for x
    x = 75,966,224.25/9,987.89
  6. Step 6: Final answer
    x = 7,605.84

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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.