Home / 8,718.36-12,031.40-4,739.47

Finding the Fourth Proportional to 8,718.36, 12,031.40 and 4,739.47

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Solution

The fourth proportional to 8,718.36, 12,031.40 and 4,739.47 is: 6,540.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,718.36 : 12,031.40 = 4,739.47 : x
  2. Step 2: Convert to fraction form
    8,718.36/12,031.40 = 4,739.47/x
  3. Step 3: Cross multiply
    8,718.36x = 12,031.40 × 4,739.47
  4. Step 4: Simplify right side
    8,718.36x = 57,022,399.20
  5. Step 5: Solve for x
    x = 57,022,399.20/8,718.36
  6. Step 6: Final answer
    x = 6,540.50

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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.