Home / 6,987.42-10,478.40-2,603.88

Finding the Fourth Proportional to 6,987.42, 10,478.40 and 2,603.88

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Solution

The fourth proportional to 6,987.42, 10,478.40 and 2,603.88 is: 3,904.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,987.42 : 10,478.40 = 2,603.88 : x
  2. Step 2: Convert to fraction form
    6,987.42/10,478.40 = 2,603.88/x
  3. Step 3: Cross multiply
    6,987.42x = 10,478.40 × 2,603.88
  4. Step 4: Simplify right side
    6,987.42x = 27,284,496.19
  5. Step 5: Solve for x
    x = 27,284,496.19/6,987.42
  6. Step 6: Final answer
    x = 3,904.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.