Home / 6,987.27-9,643.80-4,005.10

Finding the Fourth Proportional to 6,987.27, 9,643.80 and 4,005.10

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Solution

The fourth proportional to 6,987.27, 9,643.80 and 4,005.10 is: 5,527.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,987.27 : 9,643.80 = 4,005.10 : x
  2. Step 2: Convert to fraction form
    6,987.27/9,643.80 = 4,005.10/x
  3. Step 3: Cross multiply
    6,987.27x = 9,643.80 × 4,005.10
  4. Step 4: Simplify right side
    6,987.27x = 38,624,383.38
  5. Step 5: Solve for x
    x = 38,624,383.38/6,987.27
  6. Step 6: Final answer
    x = 5,527.82

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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.