Home / 8,970.35-12,379.04-4,991.23

Finding the Fourth Proportional to 8,970.35, 12,379.04 and 4,991.23

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Solution

The fourth proportional to 8,970.35, 12,379.04 and 4,991.23 is: 6,887.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,970.35 : 12,379.04 = 4,991.23 : x
  2. Step 2: Convert to fraction form
    8,970.35/12,379.04 = 4,991.23/x
  3. Step 3: Cross multiply
    8,970.35x = 12,379.04 × 4,991.23
  4. Step 4: Simplify right side
    8,970.35x = 61,786,635.82
  5. Step 5: Solve for x
    x = 61,786,635.82/8,970.35
  6. Step 6: Final answer
    x = 6,887.87

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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.