Home / 8,742.48-13,108.80-3,117.36

Finding the Fourth Proportional to 8,742.48, 13,108.80 and 3,117.36

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Solution

The fourth proportional to 8,742.48, 13,108.80 and 3,117.36 is: 4,674.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,742.48 : 13,108.80 = 3,117.36 : x
  2. Step 2: Convert to fraction form
    8,742.48/13,108.80 = 3,117.36/x
  3. Step 3: Cross multiply
    8,742.48x = 13,108.80 × 3,117.36
  4. Step 4: Simplify right side
    8,742.48x = 40,864,848.77
  5. Step 5: Solve for x
    x = 40,864,848.77/8,742.48
  6. Step 6: Final answer
    x = 4,674.29

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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.