Home / 6,987.69-9,644.38-4,005.52

Finding the Fourth Proportional to 6,987.69, 9,644.38 and 4,005.52

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Solution

The fourth proportional to 6,987.69, 9,644.38 and 4,005.52 is: 5,528.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,987.69 : 9,644.38 = 4,005.52 : x
  2. Step 2: Convert to fraction form
    6,987.69/9,644.38 = 4,005.52/x
  3. Step 3: Cross multiply
    6,987.69x = 9,644.38 × 4,005.52
  4. Step 4: Simplify right side
    6,987.69x = 38,630,756.98
  5. Step 5: Solve for x
    x = 38,630,756.98/6,987.69
  6. Step 6: Final answer
    x = 5,528.40

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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.