Home / 9,180.91-12,669.68-4,989.16

Finding the Fourth Proportional to 9,180.91, 12,669.68 and 4,989.16

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Solution

The fourth proportional to 9,180.91, 12,669.68 and 4,989.16 is: 6,885.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,180.91 : 12,669.68 = 4,989.16 : x
  2. Step 2: Convert to fraction form
    9,180.91/12,669.68 = 4,989.16/x
  3. Step 3: Cross multiply
    9,180.91x = 12,669.68 × 4,989.16
  4. Step 4: Simplify right side
    9,180.91x = 63,211,060.67
  5. Step 5: Solve for x
    x = 63,211,060.67/9,180.91
  6. Step 6: Final answer
    x = 6,885.05

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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.