Home / 8,766.40-12,098.81-4,991.11

Finding the Fourth Proportional to 8,766.40, 12,098.81 and 4,991.11

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Solution

The fourth proportional to 8,766.40, 12,098.81 and 4,991.11 is: 6,888.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,766.40 : 12,098.81 = 4,991.11 : x
  2. Step 2: Convert to fraction form
    8,766.40/12,098.81 = 4,991.11/x
  3. Step 3: Cross multiply
    8,766.40x = 12,098.81 × 4,991.11
  4. Step 4: Simplify right side
    8,766.40x = 60,386,491.58
  5. Step 5: Solve for x
    x = 60,386,491.58/8,766.40
  6. Step 6: Final answer
    x = 6,888.40

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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.