Home / 8,740.08-13,111.74-7,947.78

Finding the Fourth Proportional to 8,740.08, 13,111.74 and 7,947.78

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Solution

The fourth proportional to 8,740.08, 13,111.74 and 7,947.78 is: 11,923.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,740.08 : 13,111.74 = 7,947.78 : x
  2. Step 2: Convert to fraction form
    8,740.08/13,111.74 = 7,947.78/x
  3. Step 3: Cross multiply
    8,740.08x = 13,111.74 × 7,947.78
  4. Step 4: Simplify right side
    8,740.08x = 104,209,224.94
  5. Step 5: Solve for x
    x = 104,209,224.94/8,740.08
  6. Step 6: Final answer
    x = 11,923.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.