Home / 8,899.81-12,281.61-4,920.84

Finding the Fourth Proportional to 8,899.81, 12,281.61 and 4,920.84

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Solution

The fourth proportional to 8,899.81, 12,281.61 and 4,920.84 is: 6,790.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,899.81 : 12,281.61 = 4,920.84 : x
  2. Step 2: Convert to fraction form
    8,899.81/12,281.61 = 4,920.84/x
  3. Step 3: Cross multiply
    8,899.81x = 12,281.61 × 4,920.84
  4. Step 4: Simplify right side
    8,899.81x = 60,435,837.75
  5. Step 5: Solve for x
    x = 60,435,837.75/8,899.81
  6. Step 6: Final answer
    x = 6,790.69

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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.