Home / 8,970.26-12,379.02-4,991.54

Finding the Fourth Proportional to 8,970.26, 12,379.02 and 4,991.54

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Solution

The fourth proportional to 8,970.26, 12,379.02 and 4,991.54 is: 6,888.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,970.26 : 12,379.02 = 4,991.54 : x
  2. Step 2: Convert to fraction form
    8,970.26/12,379.02 = 4,991.54/x
  3. Step 3: Cross multiply
    8,970.26x = 12,379.02 × 4,991.54
  4. Step 4: Simplify right side
    8,970.26x = 61,790,373.49
  5. Step 5: Solve for x
    x = 61,790,373.49/8,970.26
  6. Step 6: Final answer
    x = 6,888.36

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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.