Home / 8,788.49-12,138.32-6,409.21

Finding the Fourth Proportional to 8,788.49, 12,138.32 and 6,409.21

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Solution

The fourth proportional to 8,788.49, 12,138.32 and 6,409.21 is: 8,852.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,788.49 : 12,138.32 = 6,409.21 : x
  2. Step 2: Convert to fraction form
    8,788.49/12,138.32 = 6,409.21/x
  3. Step 3: Cross multiply
    8,788.49x = 12,138.32 × 6,409.21
  4. Step 4: Simplify right side
    8,788.49x = 77,797,041.93
  5. Step 5: Solve for x
    x = 77,797,041.93/8,788.49
  6. Step 6: Final answer
    x = 8,852.15

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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.