Home / 6,238.36-8,617.80-4,987.72

Finding the Fourth Proportional to 6,238.36, 8,617.80 and 4,987.72

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Solution

The fourth proportional to 6,238.36, 8,617.80 and 4,987.72 is: 6,890.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,238.36 : 8,617.80 = 4,987.72 : x
  2. Step 2: Convert to fraction form
    6,238.36/8,617.80 = 4,987.72/x
  3. Step 3: Cross multiply
    6,238.36x = 8,617.80 × 4,987.72
  4. Step 4: Simplify right side
    6,238.36x = 42,983,173.42
  5. Step 5: Solve for x
    x = 42,983,173.42/6,238.36
  6. Step 6: Final answer
    x = 6,890.14

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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.