Home / 9,188.40-12,679.04-5,411.36

Finding the Fourth Proportional to 9,188.40, 12,679.04 and 5,411.36

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Solution

The fourth proportional to 9,188.40, 12,679.04 and 5,411.36 is: 7,467.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,188.40 : 12,679.04 = 5,411.36 : x
  2. Step 2: Convert to fraction form
    9,188.40/12,679.04 = 5,411.36/x
  3. Step 3: Cross multiply
    9,188.40x = 12,679.04 × 5,411.36
  4. Step 4: Simplify right side
    9,188.40x = 68,610,849.89
  5. Step 5: Solve for x
    x = 68,610,849.89/9,188.40
  6. Step 6: Final answer
    x = 7,467.12

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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.