Home / 9,191.32-12,684.12-4,999.58

Finding the Fourth Proportional to 9,191.32, 12,684.12 and 4,999.58

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Solution

The fourth proportional to 9,191.32, 12,684.12 and 4,999.58 is: 6,899.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,191.32 : 12,684.12 = 4,999.58 : x
  2. Step 2: Convert to fraction form
    9,191.32/12,684.12 = 4,999.58/x
  3. Step 3: Cross multiply
    9,191.32x = 12,684.12 × 4,999.58
  4. Step 4: Simplify right side
    9,191.32x = 63,415,272.67
  5. Step 5: Solve for x
    x = 63,415,272.67/9,191.32
  6. Step 6: Final answer
    x = 6,899.47

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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.