Home / 6,987.90-9,643.55-4,003.11

Finding the Fourth Proportional to 6,987.90, 9,643.55 and 4,003.11

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Solution

The fourth proportional to 6,987.90, 9,643.55 and 4,003.11 is: 5,524.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,987.90 : 9,643.55 = 4,003.11 : x
  2. Step 2: Convert to fraction form
    6,987.90/9,643.55 = 4,003.11/x
  3. Step 3: Cross multiply
    6,987.90x = 9,643.55 × 4,003.11
  4. Step 4: Simplify right side
    6,987.90x = 38,604,171.42
  5. Step 5: Solve for x
    x = 38,604,171.42/6,987.90
  6. Step 6: Final answer
    x = 5,524.43

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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.