Home / 6,986.10-9,639.72-4,001.36

Finding the Fourth Proportional to 6,986.10, 9,639.72 and 4,001.36

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Solution

The fourth proportional to 6,986.10, 9,639.72 and 4,001.36 is: 5,521.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,986.10 : 9,639.72 = 4,001.36 : x
  2. Step 2: Convert to fraction form
    6,986.10/9,639.72 = 4,001.36/x
  3. Step 3: Cross multiply
    6,986.10x = 9,639.72 × 4,001.36
  4. Step 4: Simplify right side
    6,986.10x = 38,571,928.90
  5. Step 5: Solve for x
    x = 38,571,928.90/6,986.10
  6. Step 6: Final answer
    x = 5,521.24

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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.