Home / 8,749.81-12,074.97-4,972.78

Finding the Fourth Proportional to 8,749.81, 12,074.97 and 4,972.78

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Solution

The fourth proportional to 8,749.81, 12,074.97 and 4,972.78 is: 6,862.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,749.81 : 12,074.97 = 4,972.78 : x
  2. Step 2: Convert to fraction form
    8,749.81/12,074.97 = 4,972.78/x
  3. Step 3: Cross multiply
    8,749.81x = 12,074.97 × 4,972.78
  4. Step 4: Simplify right side
    8,749.81x = 60,046,169.32
  5. Step 5: Solve for x
    x = 60,046,169.32/8,749.81
  6. Step 6: Final answer
    x = 6,862.57

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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.